#  @zaelefty Zachary Elliott Zachary Elliott posts on X about eggs, has been, there is, if you the most. They currently have [------] followers and [---] posts still getting attention that total [-------] engagements in the last [--] hours. ### Engagements: [-------] [#](/creator/twitter::2713062530/interactions)  - [--] Week [------] -51% - [--] Month [-------] -72% - [--] Months [---------] -20% - [--] Year [---------] +12% ### Mentions: [--] [#](/creator/twitter::2713062530/posts_active)  - [--] Months [---] +2.70% - [--] Year [---] +42% ### Followers: [------] [#](/creator/twitter::2713062530/followers)  - [--] Week [------] -0.04% - [--] Month [------] -0.05% - [--] Months [------] +1.60% - [--] Year [------] +8.40% ### CreatorRank: [-------] [#](/creator/twitter::2713062530/influencer_rank)  ### Social Influence **Social category influence** [technology brands](/list/technology-brands) [social networks](/list/social-networks) [finance](/list/finance) [countries](/list/countries) [celebrities](/list/celebrities) [stocks](/list/stocks) [travel destinations](/list/travel-destinations) [us election](/list/us-election) **Social topic influence** [eggs](/topic/eggs), [has been](/topic/has-been), [there is](/topic/there-is), [if you](/topic/if-you), [transgender](/topic/transgender), [humans](/topic/humans), [in the](/topic/in-the), [youtube](/topic/youtube), [binary](/topic/binary), [not a](/topic/not-a) **Top assets mentioned** [BINARY (BINARY)](/topic/binary) [Reddit, Inc. (RDDT)](/topic/reddit) [Sperm (SPERM)](/topic/sperm) [GrokCoin (GROKCOIN)](/topic/grok) [Alphabet Inc Class A (GOOGL)](/topic/$googl) ### Top Social Posts Top posts by engagements in the last [--] hours "@Woman4W If you'd like I can send you a dropbox link to six peer reviewed science papers from experts in the field of sex determination showing that sex is a binary category operating under complex mechanisms in the womb which determine whether you're a male or female" [X Link](https://x.com/zaelefty/status/1224725123355287552) 2020-02-04T16:03Z 51.4K followers, [--] engagements "@xaerorazor And yes you can have a mix of both types of gonadal tissue. You can also have vestigial Wolffian or vestigial Mullerian structures which fail to disintegrate amidst hormones or lack thereof" [X Link](https://x.com/zaelefty/status/1255719141400621056) 2020-04-30T04:42Z 47.1K followers, [--] engagements "'Stop Using Phony Science to Justify Transphobia' is another Scientific American article using the complexities of sex determination and the diversity of sex differences to argue that sex is not binary. Let's talk about it THREAD (citations numbered) https://blogs.scientificamerican.com/voices/stop-using-phony-science-to-justify-transphobia/ https://blogs.scientificamerican.com/voices/stop-using-phony-science-to-justify-transphobia/" [X Link](https://x.com/zaelefty/status/1280971658719789060) 2020-07-08T21:06Z 51.3K followers, [----] engagements "Intersex conditions are not between male and female. Intersex conditions represent the variation of anatomy and physiology *within* males and within females" [X Link](https://x.com/zaelefty/status/1292938361565519873) 2020-08-10T21:38Z 51.3K followers, [---] engagements "Trans activists like to muddy the waters of male and female by pointing out a variety of atypical karyotypes and conflating them with sex. But karyotype =/= sex. There are only two sexes. Original graphic by @AlexAlicit" [X Link](https://x.com/zaelefty/status/1406693676865179655) 2021-06-20T19:21Z 51.4K followers, [---] engagements "@RuntimeTraveler Youre forgetting the word phenotype in the definition which includes the genetically determined structures involved in producing and transporting gametes" [X Link](https://x.com/zaelefty/status/1623131513519853570) 2023-02-08T01:28Z 47.3K followers, [--] engagements "@RoombaReborn @DunkedHobnobs @lecanardnoir @Jarster2608 @mrjb260191 @B_Doe1994 @TmarTn Simple: She's female because she developed the large gamete role. Because of her genetics she developed the reproductive structures involved in producing and releasing eggs and gestating a fetus" [X Link](https://x.com/zaelefty/status/1623843052325425152) 2023-02-10T00:35Z 47.3K followers, [---] engagements "This mosaic XY female is female because she developed the large gamete role. Because of her genetics she developed the reproductive structures involved in producing and releasing eggs and gestating a fetus. @DunkedHobnobs @lecanardnoir @Jarster2608 @mrjb260191 @B_Doe1994 @TmarTn And since we're arguing the sex binary if it's the sry gene that determines your sex how would you explain this woman with the active sry gene who was assigned female at birth and gave birth to a child herself https://t.co/7oSG6ldDSa @DunkedHobnobs @lecanardnoir @Jarster2608 @mrjb260191 @B_Doe1994 @TmarTn And since" [X Link](https://x.com/zaelefty/status/1623844750624268290) 2023-02-10T00:42Z 47.3K followers, [----] engagements "This is why you do not have to be currently producing gametes to have a sex. An organism's sex can be identified by the structures involved in producing and transporting eggs or sperm. The best indicator of sex is gonad type since this is where the gametes are produced" [X Link](https://x.com/zaelefty/status/1644513839843508227) 2023-04-08T01:33Z 47.3K followers, 23.6K engagements "@heartsalty @Rimbaud587 Genes determine sex as in the development decision that differentiates the gonads into testes or ovaries. When you say determine you mean how we identify or observe sex. We identify sex by the structures involved in producing and releasing either sperm or eggs" [X Link](https://x.com/zaelefty/status/1650933368261844997) 2023-04-25T18:42Z 47.3K followers, [---] engagements "In mammals genes determine sex as in the development decision that differentiates the gonads into testes or ovaries. When you say determine you mean how we identify or observe sex. We identify sex by the structures involved in producing and releasing either sperm or eggs. @Rimbaud587 @zaelefty If he or his audience had a stem background you'd see why this doesn't prove his point. The existence of [--] gametes isn't up for debate but it's also only one factor in determining sex. @Rimbaud587 @zaelefty If he or his audience had a stem background you'd see why this doesn't prove his point. The" [X Link](https://x.com/zaelefty/status/1650934135840448533) 2023-04-25T18:45Z 47.3K followers, [----] engagements "The universal biological definition of the sexes" [X Link](https://x.com/zaelefty/status/1661371950499758085) 2023-05-24T14:01Z 47K followers, 411.8K engagements "WATCH: The Male Advantage in Sports 📽 Detailed analysis of the scientific data on why testosterone suppression does not eliminate the male performance advantage in sports" [X Link](https://x.com/zaelefty/status/1661703660563312640) 2023-06-30T00:37Z 46.7K followers, 131.7K engagements "@espiers Males have a 160% more punch power compared to an equally trained female. Good luck" [X Link](https://x.com/zaelefty/status/1661833831781900305) 2023-05-25T20:37Z 43K followers, [---] engagements "From a peer-reviewed paper on male lactation: We should therefore rethink what successful breastfeeding means. The main goal of lactation induction in transgender women may not necessarily be milk production but rather the nonnutritional benefits that come from breastfeeding" [X Link](https://x.com/zaelefty/status/1677408495199567874) 2023-07-07T20:05Z 47.4K followers, 1.6M engagements "In summary lactation induction is likely beneficial for gender identity irrespective of milk production outcomes" [X Link](https://x.com/zaelefty/status/1677412914863505409) 2023-07-07T20:22Z 47.1K followers, 71.2K engagements "It takes a special kind of evil to use your own child to validate your perversions" [X Link](https://x.com/zaelefty/status/1677697842083684352) 2023-07-09T00:46Z 46.7K followers, [----] engagements "Never confuse education with intelligence. You can have a PhD and still be an idiot. Richard Feynman" [X Link](https://x.com/zaelefty/status/1677836454666305536) 2023-07-09T01:14Z 46.7K followers, 10.6K engagements "@KatieInBoston1 @emmakennytv @oldscousema @LGBTSRH Have some perspective Katie. This was over two years ago before I fully understood the nuances of the terminology long before I met you. You know what my stance is now. I respect your passion for helping educate on DSDs and your condition but this is getting tiresome" [X Link](https://x.com/zaelefty/status/1677865480768331776) 2023-07-09T02:21Z 46.7K followers, [--] engagements "Arrogance and ignorance is an incredibly destructive combination" [X Link](https://x.com/zaelefty/status/1678442146913824769) 2023-07-10T16:57Z 46.7K followers, [----] engagements "Much of the media is treating the Caster Semenya case as though this is discriminating against a woman for high T levels. But Semenyas disorder is a male DSD and the male performance adv. is retained. See our animated video on the biology of 5-ARD" [X Link](https://x.com/zaelefty/status/1678874791598518272) 2023-07-11T21:14Z 46.7K followers, 82.5K engagements "See this sex development chart of 5-ARD. The condition does not impact the reception of T from the testes it simply impacts the production of DHT involved in completing the males external genitalia" [X Link](https://x.com/zaelefty/status/1678875261318705152) 2023-07-11T21:14Z 46.7K followers, [----] engagements "ABC News reported that Caster Semenya has a DSD causing "high testosterone levels." This is false. 5-ARD results in lack of DHT which pauses the dev of external male genitalia. The high T is not a product of the disorder; it is a product of Semenya's sex which is male" [X Link](https://x.com/zaelefty/status/1678911598797238275) 2023-07-12T01:51Z 46.7K followers, 44.2K engagements "An excellent scientific summary of 5-ARD and whether it negatively impacts the male sports performance advantage. Long story short: It does not" [X Link](https://x.com/zaelefty/status/1678966966692851713) 2023-07-12T03:18Z 46.7K followers, 15.2K engagements "Since the first uterine transplant in the US doctors have been theorizing if a uterus transplant could be possible for a transwoman. Case studies say otherwise. Fascinating article by @shamanspirit13" [X Link](https://x.com/zaelefty/status/1681046070451642368) 2023-07-18T00:21Z 46.7K followers, [----] engagements "Your gender identity is a belief system. Making misgendering a criminal offense is to compel others to profess their unwavering alignment with your subjective belief system through threat of the State" [X Link](https://x.com/zaelefty/status/1681289920751579136) 2023-07-20T01:24Z 46.7K followers, 21.6K engagements "Gender identity is a subjective unfalsifiable belief system that has no business being compelled by law" [X Link](https://x.com/zaelefty/status/1681368361907748866) 2023-07-20T01:24Z 46.7K followers, 30K engagements "You cannot identify out of your species age or sex. You can view yourself however you like but it does not change material reality" [X Link](https://x.com/zaelefty/status/1681693647429947392) 2023-07-20T01:16Z 46.7K followers, 19.5K engagements "No good data claims that 4% of the population is intersex unless you expand the definition so wide until it becomes meaningless where even small variations in peoples physiology makes them intersex. Are you a woman with slightly higher T Congrats Youre intersex now Clinically intersex refers to disorders that result in a phenotype that is opposite of what is expected from the chromosomes or a mix of male and female organs. Examples would include XX male syndrome (typical male system with XX chromosomes) or PMDS (males with a vestigial uterus). But when that definition is used the rate is" [X Link](https://x.com/zaelefty/status/1684431305780371456) 2023-07-27T05:11Z 46.7K followers, 232.9K engagements "Imagine thinking that one of the most fundamental ancient biological phenomenon was created by men" [X Link](https://x.com/zaelefty/status/1684579111107444736) 2023-08-05T21:49Z 46.7K followers, 136.8K engagements "Males produce sperm. Females produce eggs. This is the fundamental difference between the sexes and it applies to humans just as it applies to other mammals to birds to fish to insects and even to plants. Its one of the most ancient phenomena in biology" [X Link](https://x.com/zaelefty/status/1684916246427353089) 2023-07-28T13:18Z 47.1K followers, 31.7K engagements "The four principles of the sex binary" [X Link](https://x.com/zaelefty/status/1686819651311779846) 2023-08-02T19:21Z 46.7K followers, 18.9K engagements "You dont need to be a biologist to know there are two sexes but understanding advanced biology helps reinforce this fact because the science of evolution and development reveals the male-female binary is a far deeper truth about nature than one might expect. Mathematical modeling and empirical observation has shown that the emergence of two sexes is an inevitable consequence of sexual reproduction and that the two sexes have evolved independently in nearly all lineages of multicellular species. Its practically a law of nature as organisms become more complex. [--] Kirk D. (2006). Oogamyinventing" [X Link](https://x.com/zaelefty/status/1687021632097849344) 2023-08-03T08:44Z 47.1K followers, 13.7K engagements "Womanhood is dependent on developing the body plan that produces eggs. You dont have to actively produce eggs to be a woman but you do have to go down the female developmental pathway in the womb" [X Link](https://x.com/zaelefty/status/1688155570753183744) 2023-08-06T11:50Z 46.7K followers, 32.6K engagements "The strength difference between male and female bodies is vast. On average males have: - 57% more grip strength [--] - 65% more leg strength [--] - 90% more total upper body strength [--] - 162% more punch power [--] To put these numbers in comparison males are only 7% taller than females yet on the population level we easily see the considerable height differences between them.5 Percentages like 50-160% are therefore immense and have considerably less overlap between the sexes. The musculoskeletal differences between equally trained males and females are so large that there is no way males can compete" [X Link](https://x.com/zaelefty/status/1688158885889110016) 2023-08-06T12:03Z 43.7K followers, 3.1M engagements "WATCH: The Male Advantage in Sports 📽 Detailed analysis of the scientific data on why testosterone suppression does not eliminate the male performance advantage in sports" [X Link](https://x.com/zaelefty/status/1688224589791244288) 2023-08-06T16:24Z 46.7K followers, 113.7K engagements "This is false. We all begin phenotypically indifferent (undifferentiated). In the embryo the gonads begin bipotential until they differentiate into testes or ovaries based on genetic triggers around the 6th week. At this stage and before the fetus has the primordial genital ducts of both sexes. One is regressed in embryonic development and the other differentiates and stabilizes. People often assume that "undifferentiated" = female but developing as a female is an active gene-directed process that requires a specific path of differentiation. The first step in this pathway is the" [X Link](https://x.com/zaelefty/status/1688249263283687424) 2023-08-06T18:02Z 46.7K followers, 26.2K engagements "Sex is defined as the phenotype (determined by genetics) that has the function of producing sperm vs producing eggs regardless of present functionality. This is developed in the womb and in mammals it cannot be changed. For more see: [--] Lehtonen J. Parker G. (2014). Gamete competition gamete limitation and the evolution of two sexes. Molecular Human Reproduction 20(12). [--] Holub A. Shackelford T. (2021). Gonochorism. Encyclopedia of Animal Cognition and Behavior. Springer. Thank you to @sarannadam for the summon" [X Link](https://x.com/zaelefty/status/1688672947609686017) 2023-08-07T22:06Z 46.7K followers, 20.3K engagements ""Maybe we aren't gender bits. Maybe we are gender qubits." @neiltyson pulls a quantum flapdoodle which involves the misapplication of quantum physics to unrelated topics" [X Link](https://x.com/zaelefty/status/1689066275459280896) 2023-08-09T00:09Z 46.7K followers, 13.7K engagements "Mammals are gonochoric. This includes humans" [X Link](https://x.com/zaelefty/status/1689276648242221056) 2023-08-09T14:05Z 46.7K followers, 13K engagements "Males have 57% more grip strength than an equally trained female. There's not much overlap between the sexes. Now imagine 162% more punch power which males have over females" [X Link](https://x.com/zaelefty/status/1689858478595096577) 2023-08-11T04:37Z 46.7K followers, 27.3K engagements "Males produce 15-20 times more T than females. The highest T levels in a female are still [--] times lower than the lowest T levels in a male. There is usually almost no overlap between sexes here" [X Link](https://x.com/zaelefty/status/1690097651839074304) 2023-08-11T20:27Z 46.7K followers, [----] engagements "An animated video response to @sciam's sex spectrum article "Stop Using Phony Science to Justify Transphobia."" [X Link](https://x.com/zaelefty/status/1690174986185535489) 2023-08-12T01:34Z 46.7K followers, 12.7K engagements "Look at all the genes involved in making testes and all the genes involved in making ovaries. There is not "only a single gene difference between them." Development of ovaries vs testes is regulated by a mutually antagonistic network of genes. And in mammals once the differentiation of the bipotential gonad has progressed far enough in the embryo it cannot be changed into the other gonad type. [--] Leon N. Reyes A. Harley V. (2019). Differences of sex development: the road to diagnosis. Lancet Diabetes Endocrinology. [--] Warr N. et al. (2012). The molecular and cellular basis of gonadal sex" [X Link](https://x.com/zaelefty/status/1690247078671208448) 2023-08-12T06:21Z 46.7K followers, 96.4K engagements "@primalpoly Feeding my newborn daughter 🥰" [X Link](https://x.com/zaelefty/status/1690432624433471489) 2023-08-12T18:38Z 46.7K followers, [----] engagements "The presence of the Y chromosome in a typical fetus will initiate gonadal differentiation into testes. These testes in the male will produce 15-20 times more T than females and over the course of childhood and especially puberty receiving this T will masculinize the muscles bones and tissues in an irreversible way that confers incredible sports advantage. Thus the Y chromosome in and of itself does not confer the male sports performance advantage. Its the downstream consequences of it through development. If you are born with no testes as in the case of Swyer then there is no source for the" [X Link](https://x.com/zaelefty/status/1690733616769163264) 2023-08-13T14:34Z 43.7K followers, [----] engagements "WATCH: [--] reasons why biological sex matters 📽" [X Link](https://x.com/zaelefty/status/1690759277936361473) 2023-08-13T16:16Z 46.7K followers, [----] engagements "READ: The Ugly Truth of Male Breastfeeding In this detailed piece @shamanspirit13 analyzes the literature on artificially-induced male breastfeeding to see if it is safe and healthy for the infant. Short answer: its not" [X Link](https://x.com/zaelefty/status/1690923026554957824) 2023-08-14T03:07Z 46.7K followers, 100.4K engagements "@gjblackshaw @UnrealElHunter Yep Many species of reptile use temperature sex determination. A certain range triggers male dev and another range triggers female dev. Fascinating" [X Link](https://x.com/zaelefty/status/1691453332114808833) 2023-08-15T14:14Z 46.7K followers, [---] engagements "@gjblackshaw @UnrealElHunter In turtles: If eggs are incubated below 28C all the turtles hatching from them will be male. Above 31C every egg gives rise to a female. At temperatures in between the broods will give rise to individuals of both sexes" [X Link](https://x.com/zaelefty/status/1691453764421726208) 2023-08-15T14:16Z 46.7K followers, [---] engagements "If you are going to read one scientific paper on biological sex read this one. Its the best scientific summary for articulating why sex is binary written in the peer-reviewed journal BioEssays. https://onlinelibrary.wiley.com/doi/10.1002/bies.202200173af=R https://onlinelibrary.wiley.com/doi/10.1002/bies.202200173af=R" [X Link](https://x.com/zaelefty/status/1691645266376441968) 2023-08-16T02:57Z 47K followers, 88.1K engagements "So if a male athlete wears a wig and a dress he automatically loses his - 57% more grip strength [--] - 65% more leg strength [--] - 90% more total upper body strength [--] - 162% more punch power 4" [X Link](https://x.com/zaelefty/status/1691651362218524700) 2023-08-16T03:21Z 46.7K followers, 41.2K engagements "Biologists discuss how the two sexes originated over [--] billion years ago: Sexual reproduction has its evolutionary origins in the fusion of same-size gametes (isogamy). According to current understanding the size dimorphism between eggs and sperm (anisogamy) that we observe today was driven by competition of germ cells over fertilization.9 13-17 In brief assuming equal resources organisms can either invest in gamete size or gamete number. Large germ cells or egg cells contribute energy resources important cell organelles and genetic material to the formation of the zygote. In contrast the" [X Link](https://x.com/zaelefty/status/1691880521167454417) 2023-08-16T18:32Z 46.7K followers, [----] engagements "Atypical development of one trait like genitalia does not call into question the reproductive system a person developed nor does it call into question their sex. Understanding sex development as an evolved sequential and coordinated process with the ultimate end point of developing reproductive anatomy to produce either sperm or eggs is essential for understanding how sex development disorders exist within the binary system of sex" [X Link](https://x.com/zaelefty/status/1692102956659700027) 2023-08-17T09:15Z 46.7K followers, [----] engagements "The irony of the sex spectrum is that in the attempt to recognize those with atypical bodies sex spectrum pseudoscientists reinforce narrow boxes onto others by creating rigid definitions of whats accepted as male or female. Every sex spectrum argument ironically creates this outcome: by upholding human-centric scientifically incorrect definitions of male and female (the mix of traits detached from reproductive function) sex spectrum arguments further a rigid socially constructed definition. For example the sex spectrum criteria that a male must have a specific penis length and urethral" [X Link](https://x.com/zaelefty/status/1692555148147499378) 2023-08-18T15:12Z 46.7K followers, 10.1K engagements "Gender activists consider hypospadias an "intersex" condition. Hypospadias are the most common genital defect in newborn boys which results in the urethra opening on the underside of the shaft not the tip (the penis was not closed fully). Can you imagine thinking this makes these boys not male" [X Link](https://x.com/zaelefty/status/1692557291378061655) 2023-08-18T15:21Z 43.7K followers, 192.4K engagements "The vast difference of resource investment into large gametes (eggs) vs small gametes (sperm) is visually striking in birds. Consider that when you eat eggs the resources you receive from these large gametes would be used in typical circumstances for the developing zygote. Sperm typically provide no resources to the developing zygote and so the main energy investment especially on the gametic level comes from the female. This difference in investment is a source of many sex differences including the differences in male vs female reproductive anatomies and behaviors" [X Link](https://x.com/zaelefty/status/1692565391719985241) 2023-08-18T15:53Z 46.7K followers, [----] engagements "Please help find this man's critical thinking skills" [X Link](https://x.com/zaelefty/status/1692587120467030491) 2023-08-18T17:19Z 43.7K followers, 10.6K engagements "In the coming weeks I'll be releasing my new book "Binary: Debunking the Sex Spectrum Myth" on Amazon 🥳 You'll be able to buy it in paperback hardcover and eBook formats as well as discover the book at other retailers soon after. I'll announce it here when it's released" [X Link](https://x.com/zaelefty/status/1692611665722757297) 2023-08-18T18:57Z 46.7K followers, 10.7K engagements "WATCH: Why Sex Is Binary 📽 Sex is a binary system across the plant and animal kingdoms with exactly two sexes no more and no less. The reason is beautifully simple" [X Link](https://x.com/zaelefty/status/1692788202971574407) 2023-08-19T06:38Z 46.7K followers, [----] engagements "Gender-affirming care is about performing cosmetic surgeries on children and adults to align their bodies with their gender identity. Performing surgery on children and adults to help their body systems function normally is not the same thing" [X Link](https://x.com/zaelefty/status/1692902186617889195) 2023-08-19T14:11Z 46.7K followers, [----] engagements "There are [--] major reasons why this graphic is wrong. [--]. There are no units on this spectrum to quantify it. [--]. The sheer number of overlapping arrows is evidence that sex cannot be plotted on a spectrum. [--]. There is no objective method to decide where individual DSDs are placed on the spectrum. [--]. Congenital Adrenal Hyperplasia is placed farther to the male end than XX male syndrome implying that XX males (with fully developed penis and testes) are more female than an XX CAH female with ovaries uterus vagina and a slightly masculinized clitoris. [--]. Androgen Insensitivity Syndrome is placed in" [X Link](https://x.com/zaelefty/status/1693014424062169116) 2023-08-19T21:37Z 43.3K followers, 66.9K engagements "Can you all please kindly let Kelly know that people are indeed cutting up kids" [X Link](https://x.com/zaelefty/status/1693104550251577526) 2023-08-20T03:35Z 46.7K followers, [----] engagements "My new upcoming book Binary is the ultimate guide for debunking the sex spectrum. It tackles [--] common sex spectrum arguments we see on social media and shows how they misrepresent evolution development and genetics" [X Link](https://x.com/zaelefty/status/1693261516726788121) 2023-08-20T13:59Z 46.7K followers, [----] engagements "It is often claimed by gender activists that 1.7% of the population are neither male nor female. But 88% of the 1.7% number involves Late Onset CAH which involves unambiguous males or females who are almost always fertile. This drops the number to 0.2%. But even within this percentage almost all DSDs do not cause any sex ambiguity. The fetus still develops a clear phenotype organized around sperm or ova. The cases that result in ambiguity are less than 0.02% of the population and within these cases sex can still be identified by analyzing gonadal tissue and internal genitalia to see what" [X Link](https://x.com/zaelefty/status/1694022023553462487) 2023-08-22T16:21Z 46.7K followers, 420.6K engagements "Sex determination is the developmental decision / trigger that decides whether the bipotential gonad differentiates into ovaries or testes. This is determined genetically in humans. Sex differentiation is the development of the genital ducts of either sex organized by the gonad environment and its hormone production or lack thereof. Genetic sex determination has to happen first before the hormone driven genital differentiation. For more see: [--] Eggers S. Sinclair A. (2012). Mammalian sex determination--insights from humans and mice. Chromosome Res 20" [X Link](https://x.com/zaelefty/status/1694069400851100049) 2023-08-22T19:29Z 46.7K followers, [----] engagements "By the way I do have my sex development charts which plot the development path of most of the conditions on the graphic. But a written description would still be useful" [X Link](https://x.com/zaelefty/status/1694227573121687694) 2023-08-23T05:58Z 46.7K followers, 13.7K engagements "So far gender activists have called me: - A [--] year old gender critical prophet - A trust fund golf boy - A future Ben Shapiro - An architecture student (still) - A Christian pastor - A person who has never heard of intersex - A person who doesnt know what sex reversal is. - A person who is funded by right-wing shadow money. - A person who hires people to edit and produce his animated videos - A grifter who gets tons of money - A transphobe - An intersexphobe - A homophobe - A sexist - A misogynist - A Nazi - A ghoul - A person who has never had sex (I have a newborn). All of these are just" [X Link](https://x.com/zaelefty/status/1694448852395323840) 2023-08-23T20:37Z 46.7K followers, [----] engagements "@hansgunning Based on similar types of DSDs we know of probably [--] in [-----] or rarer 💀" [X Link](https://x.com/zaelefty/status/1694865065004920964) 2023-08-25T00:11Z 46.7K followers, [--] engagements "@ztraiin Unfortunately I cant access the full article and theres not enough info on the preview for me to comment on it with any accuracy 🤔" [X Link](https://x.com/zaelefty/status/1694867569692287105) 2023-08-25T00:21Z 46.7K followers, [--] engagements "@hansgunning The activist brought up the rarity as supposed evidence that my position is contradictory. I was showing him and others that the example he provided simply reinforced the definition of sex. Its also interesting from an academic perspective. So those are the reasons why" [X Link](https://x.com/zaelefty/status/1694885107914387592) 2023-08-25T01:31Z 47.2K followers, [--] engagements "Two sexes have existed for over a billion years regardless of what humans thought. You do make a good point that society often viewed women as underdeveloped men which is partially the cause for the myth that we all begin as females in the womb. This is a belief common with gender ideology" [X Link](https://x.com/zaelefty/status/1695105644913668096) 2023-08-25T16:07Z 46.7K followers, [----] engagements "My new book on debunking the sex spectrum (Binary) releases in ONE WEEK It will officially be available for order September [--] on Amazon U.S. and internationally I tackle [--] of the most common sex spectrum arguments and dismantle them with detailed biology literature. Ill also be revealing the cover on September [--] and will host a Twitter space to overview the books contents with an exclusive Q&A. More details to come this week" [X Link](https://x.com/zaelefty/status/1695305753614078429) 2023-08-26T05:22Z 46.7K followers, 15.4K engagements "@rejserin @St8ingObvious "Not a single citation for any facts." The digital pamphlet text which the QR code links to has [--] in-text citations for every claim. Full bibliography at the end" [X Link](https://x.com/zaelefty/status/1695931363210281065) 2023-08-27T22:48Z 46.7K followers, [--] engagements "Two species of rat in Japan have lost their Y chromosome and the SRY gene which is essential for developing the male sex. So how do they still produce males This is a fascinating question considering the males and females are chromosomally identical. In the Amami spiny rat Tokudaia osimensis whose males and females both just have a single X chromosome a small genetic sequence on Chromosome [--] duplicated only in male fetuses tells the SOX9 gene to upregulate itself. This upregulation causes the bipotential gonad to differentiate into testes the first step of male sex determination. In humans" [X Link](https://x.com/zaelefty/status/1696358738397966774) 2023-08-29T03:06Z 47.1K followers, 18.5K engagements "Your semi-regular reminder that sex is universally defined by reproduction function and that this woman despite having 95% XY chromosomes developed a female body plan due to her GENETICS able to gestate and give birth. She is not male. This is not a case of a man giving birth. This is a case of an unambiguous female with a genetic disorder giving birth through egg donation" [X Link](https://x.com/zaelefty/status/1696568314397421990) 2023-08-29T16:59Z 46.7K followers, 18.1K engagements "Furthermore this case has nothing to do with trans-identified males who wish to give birth. They have a MALE reproductive system and physiology that cannot support a pregnancy. This woman has a FEMALE reproductive system. That is why she was able to support a pregnancy" [X Link](https://x.com/zaelefty/status/1696569514018697491) 2023-08-29T17:04Z 46.7K followers, [----] engagements "What sex are babies They dont produce mature gametes. What sex are menopausal women who no longer produce eggs Or a man who was never able to produce sperm The answer to those questions is found in the reproductive system one develops in the womb and how that reproductive system supports the production and release of a gamete type determined by genetics" [X Link](https://x.com/zaelefty/status/1696582827687485501) 2023-08-29T17:57Z 46.7K followers, [----] engagements "They are definitely not a woman by the definition because a man who has a uterine transplant still has the body plan determined by genetics that produces sperm. Surgery does not change the function of the phenotype" [X Link](https://x.com/zaelefty/status/1696584272235106699) 2023-08-29T18:03Z 46.7K followers, [----] engagements "This is the universal biological definition of male and female. It applies across all anisogamous species and across all time periods" [X Link](https://x.com/zaelefty/status/1696589264429965385) 2023-08-29T18:22Z 47.1K followers, 20.8K engagements "I wonder why despite having 95% XY chromosomes she developed as a female Could it be due to the *genes* within the chromosomes that are missing Like SRY This is the point of mentioning genetics. In disorders like this looking at chromosomes alone wont tell you the full story. You have to zoom in more" [X Link](https://x.com/zaelefty/status/1696595121892888818) 2023-08-29T18:46Z 46.7K followers, [----] engagements "Those are isogamous organisms with no sex. They have mating types not sexes. Sexes are defined by a difference in gamete size and therefore a difference in resource contribution in reproduction. While isogamous species use mating types and engage in sexual reproduction they cannot be said to have a sex. Gamete compatibility in these systems is regulated by molecular markers" [X Link](https://x.com/zaelefty/status/1696597791001239632) 2023-08-29T18:56Z 47.1K followers, [---] engagements "Why are gametes so important Heres the brief summary. In biology systems are defined by their structure and function. Certain structures have certain functions like our hearts or eyes. Same concept applies to sexes male and female which also have a structure (this can be diverse across species) and a function (this is universal across species). The universal function of the male and female sexes is the production of gametes of differing size and form. Sperm for the male eggs for the female. Our reproductive systems have evolved to support one of these two gamete types and there are a host of" [X Link](https://x.com/zaelefty/status/1696610547528073359) 2023-08-29T19:47Z 46.7K followers, [----] engagements "Activists claim that sex is bimodal. Here is an example of a bimodal graph a continuous set of data with two modes. This one is height. One distribution represents females the other represents males. Are people in the middle intersex This would be absurd but it is the logical application of the claim that sex itself is bimodal. No traits that vary by sex like height weight hormone levels are often bimodal but only because there are two sexes each with an average distribution of variation in a given trait. Overlap between the two distributions shows where males and females share a common set" [X Link](https://x.com/zaelefty/status/1696667453906997448) 2023-08-29T23:33Z 46.7K followers, [----] engagements "The lengths people will go to deny the ancient reality of male and female. It is one of the most fundamental aspects of biology. If youre willing to believe they are constructed by society and that you can transcend them what else are you willing to believe" [X Link](https://x.com/zaelefty/status/1696894556724212103) 2023-08-30T14:36Z 46.7K followers, 37.1K engagements "WATCH: The Male Advantage in Sports 📽 Detailed analysis of the scientific data on why testosterone suppression does not eliminate the male performance advantage in sports. Sources and transcript:" [X Link](https://x.com/zaelefty/status/1696915683836297646) 2023-08-30T16:00Z 46.7K followers, 188.4K engagements "The biologists writing this understand that the definition of sexes is the universal one in biology because it is the only one that applies across all anisogamous species and all time periods. They say that the definition of sex and sexes are used in different ways because they understand there are different contexts in which they are used like in social cultural or medical contexts. For example the word sex is often used as the verb for sexual intercourse and they want to be clear that there are other contexts for its use. But when it comes to sexes they make clear in their paper that the" [X Link](https://x.com/zaelefty/status/1696941563094475010) 2023-08-30T17:42Z 46.7K followers, [----] engagements "My new book releases for order Sept [--] I tackle [--] common sex spectrum arguments where I will walk you through how to understand their strategies and how to expertly combat them with evolutionary and developmental biology" [X Link](https://x.com/zaelefty/status/1696959225212072411) 2023-08-30T18:53Z 46.7K followers, [----] engagements "READ: Ethics Science and History of Uterine Transplants in Males Since the first uterine transplant in the US doctors have been theorizing if a uterus transplant could be possible for a transwoman. Case studies say otherwise. @shamanspirit13 https://www.theparadoxinstitute.com/read/ethics-science-and-history-of-uterine-transplants-in-males https://www.theparadoxinstitute.com/read/ethics-science-and-history-of-uterine-transplants-in-males" [X Link](https://x.com/zaelefty/status/1696965870176580088) 2023-08-30T19:19Z 47.1K followers, [----] engagements "Everyone produces testosterone and estrogen. Yes but those with testes (males) produce 15-20x more T than females and this immense amount of T masculinizes the body across development providing the male with a massive musculoskeletal and physiological advantage. Caster Semenya who is XY has 5-ARD a male DSD. Those with it have normal testes that produce male typical levels of T with normal reception of T from those testes masculinizing the body. Their bodies just cannot convert that T into DHT which is the hormone responsible for the final step of differentiation of the males external" [X Link](https://x.com/zaelefty/status/1697017343824564439) 2023-08-30T22:43Z 46.7K followers, [----] engagements "I've always understood that the sexes are defined by the differences in their reproductive role: males provide the sperm females provide the egg. This applies across the plant and animal kingdoms. And I learned it in middle school" [X Link](https://x.com/zaelefty/status/1697039782130409844) 2023-08-31T00:13Z 46.7K followers, [----] engagements "A knowledgeable biologist or mycologist would know that isogamous fungi have whats called mating types where gametes are the same size (no sperm and no egg) and there can be tens of thousands of them each one with a unique molecular compatibility marker but they are not sexes. Sexes are defined by a difference in gamete size (sperm and egg also known as anisogamy). There are no sexes in isogamous mating types. Latest science tells us there are over [-----] sexes assuming humans are mushrooms 🍄 https://t.co/zP6QfkQsyg Latest science tells us there are over [-----] sexes assuming humans are" [X Link](https://x.com/zaelefty/status/1697056916885615054) 2023-08-31T01:21Z 47.1K followers, 33.1K engagements "I'm not a biologist though I understand the biology of sex and sex differences near a PhD level. I've read the detailed primary literature on it studied it extensively for seven years written three books on it totaling [------] words produced more than twenty animated videos on various biology of sex topics and written many educational articles" [X Link](https://x.com/zaelefty/status/1697111890579595480) 2023-08-31T04:59Z 46.7K followers, [--] engagements "Always ask what units they are using to plot this bimodal spectrum. Certain traits can be plotted as a continuous variable. The axis could be testosterone levels or weight but when it comes to karyotype gonad type or Wolffian vs Mullerian duct structures there is no intrinsic order for them. How do you order XX XY XXY and XXYY for example They are discrete and cannot be plotted on a spectrum. Now imagine taking all of these traits and plotting them together in one spectral smoothie. The units wont be consistent so you cant even combine the data and theres no objective method for ordering all" [X Link](https://x.com/zaelefty/status/1697243612189434000) 2023-08-31T13:43Z 46.7K followers, [----] engagements "Here are some common motivation-based ad hominem responses by gender activists. These are fallacious responses used to discredit a scientific claim on the basis of hidden motivations despite having no evidence for them: You do this for money (grifter) Youre religious Youre bigoted Youre transphobic Youre secretly paid by a think tank You have trauma in your past You want to hurt the oppressed You hate bodily autonomy Youre a Republican Youre a Trump supporter You want to control others Youre paranoid" [X Link](https://x.com/zaelefty/status/1697351807406658017) 2023-08-31T20:53Z 46.7K followers, [----] engagements "Keith Olbermann does not understand the science of athletic performance between males and females but neither does he care too. Instead hes an angry shell of a man who decides to crap on one of the most accomplished female swimmers on behalf of men wanting to be women. @Riley_Gaines_ Can you just address the reality and move past it You sucked at swimming. That's why you lost. @Riley_Gaines_ Can you just address the reality and move past it You sucked at swimming. That's why you lost" [X Link](https://x.com/zaelefty/status/1697435515367117006) 2023-09-01T02:25Z 47.1K followers, 29K engagements "Do you not understand the science of the male performance advantage The strength difference between male and female bodies is vast. On average males have: - 57% more grip strength [--] - 65% more leg strength [--] - 90% more total upper body strength [--] - 162% more punch power [--] To put these numbers in comparison males are only 7% taller than females yet on the population level we easily see the considerable height differences between them.5 Percentages like 50-160% are therefore immense and have considerably less overlap between the sexes. The musculoskeletal differences between equally trained" [X Link](https://x.com/zaelefty/status/1697436315220865386) 2023-09-01T02:28Z 47.1K followers, 81.9K engagements "READ: Medicalization of Gender Non-Conformance A detailed look at how gender non-conforming kids are being pushed into gender identity medicalization. https://www.theparadoxinstitute.com/read/medicalization-of-gender-non-conformance https://www.theparadoxinstitute.com/read/medicalization-of-gender-non-conformance" [X Link](https://x.com/zaelefty/status/1697580325520412756) 2023-09-01T12:01Z 47.1K followers, [----] engagements "READ: There Is No Trans Genocide Gender activists often claim that genocide is being committed against the trans community via anti-trans laws. An analysis of the evidence shows an ugly truth but not in the way one would expect. @shamanspirit13" [X Link](https://x.com/zaelefty/status/1697942670918729774) 2023-09-02T12:00Z 46.7K followers, 15.7K engagements "I present my new book on debunking the sex spectrum Order now on Amazon I tackle [--] common sex spectrum arguments and teach the reader how to respond with detailed knowledge from evolutionary and developmental biology literature. https://www.amazon.com/Binary-Debunking-Sex-Spectrum-Myth/dp/B0CFZL3HXN/ https://www.amazon.com/Binary-Debunking-Sex-Spectrum-Myth/dp/B0CFZL3HXN/" [X Link](https://x.com/zaelefty/status/1697989555847065911) 2023-09-02T15:07Z 47K followers, 327.4K engagements "The book is now the number #1 new release in biology 🥳 Order it on your local Amazon website" [X Link](https://x.com/anyuser/status/1698164206107865533) 2023-09-03T02:41Z [--] followers, [----] engagements ""Biologists consider the evolution of the two sexes mathematically inevitable because it maximizes the efficiency of sexual reproduction providing resources to the offspring through investment in large nutrient heavy eggs while also maximizing gamete fusion through the production of many sperm that are not as resource intensive and yet can quickly search for and find the egg. This efficiency is why it has evolved independently so many times." Order now on Amazon:" [X Link](https://x.com/zaelefty/status/1698415584348692820) 2023-09-03T19:20Z 46.7K followers, [----] engagements "The four principles of the sex binary. Those who wish to deny these are denying foundational truths in evolution development and genetics" [X Link](https://x.com/zaelefty/status/1698484126741852548) 2023-09-03T23:52Z 46.7K followers, 11.2K engagements "This is the universal definition of sexes. The reason why it is universal is because it applies to every single species with male-female sexual systems. Its the fundamental difference between the sexes. This is almost every plant species and all animal species" [X Link](https://x.com/zaelefty/status/1698520972628730083) 2023-09-04T02:18Z 47.1K followers, 13K engagements "Chromosomes hold the genetic instructions for sex development. It does not matter how many sex chromosomes you add or take away youll always either get a male or female. The genetic sex determination system in mammals is binary" [X Link](https://x.com/zaelefty/status/1698542914421358796) 2023-09-04T03:46Z 46.7K followers, [----] engagements "Why can't a male develop identical breasts to a female since breast tissue growth is sensitive to high estrogen exposure in both sexes This has to do with what's called the hypothalamic-pituitary-gonadal axis or HPG. This axis forms an important brain-to-gonad feedback loop at puberty that causes the masculinization or feminization of the body depending on the gonad type you have. Many of the effects will be permanent (so called organizational effects). For females the HPG axis is specifically the HPO axis (O for ovarian). At puberty the cyclical production of estrogen from the ovaries and" [X Link](https://x.com/zaelefty/status/1698588982148251770) 2023-09-04T06:49Z 46.7K followers, 512.2K engagements "This is known as a postmodern language game. They believe that if they redefine words they will achieve liberation from oppressive societal constructs" [X Link](https://x.com/zaelefty/status/1698726449090367667) 2023-09-04T15:55Z 46.7K followers, 28.5K engagements "How the sex spectrum uses a veneer of science: "The scientific language is simply a veneer for the social and political arguments hiding behind it. Evolutionary biologist @BretWeinstein calls this strategy idea laundering: portraying ones moral impulses prejudices and opinions as objective scientific knowledge. Similar to a money laundering operation which uses a legitimate business to hide the illegal activity underneath idea laundering uses scientific language and credentials as a cover to sneak in sociopolitical agendas under the more legitimate veneer of science." Excerpt from my new book" [X Link](https://x.com/zaelefty/status/1698732392440049937) 2023-09-04T16:18Z 46.7K followers, [----] engagements "He first says that being a woman is about sex / biology. Then says he thinks theyre adult girls Weird choice of words. And ends with transwomen can be women as well. Im confused. Sadiq Khan tells Piers Morgan what he thinks a woman is 👇 @MayorofLondon @SadiqKhan @piersmorgan #PMU https://t.co/l4pzj1cavo Sadiq Khan tells Piers Morgan what he thinks a woman is 👇 @MayorofLondon @SadiqKhan @piersmorgan #PMU https://t.co/l4pzj1cavo" [X Link](https://x.com/zaelefty/status/1698833687029125255) 2023-09-04T23:01Z 47.2K followers, [----] engagements "Why gamete production does not define sex is like saying why sight production does not define eyes. Function is the defining feature of biological systems the thing that differentiates between whether were looking at a heart an eye or a leg. And function also unites similar systems despite them looking very different. Eyes have very diverse structures across species yet they are all defined the same: by the function of sight production" [X Link](https://x.com/zaelefty/status/1698845964700684746) 2023-09-04T23:50Z 46.7K followers, 10.7K engagements "The word youre looking for is female" [X Link](https://x.com/zaelefty/status/1698921356157431975) 2023-09-05T04:49Z 46.7K followers, [----] engagements "The sex spectrum is one of the most popular forms of evolution denial that weve seen in recent times. It claims that the sexes are constructed by society and that there exists a continuum of options in between them. To believe this youd have to deny many things from how we reproduce as a species to sexual selection development and genetics" [X Link](https://x.com/zaelefty/status/1699123114439749907) 2023-09-05T18:11Z 46.7K followers, 115.1K engagements "Biologists and mycologists understand that those thousands of sexes are actually mating types in isogamous systems not sexes. Sexes are defined by a difference in gamete size whereas mating types are defined by incompatibilities between phenotypically similar gametes / partners (isogamy). Gametes in such systems are the same size and thus there are no sexes. There can be thousands of mating types but only two sexes. See Perrin N. (2011). What uses are mating types for more on that important distinction" [X Link](https://x.com/zaelefty/status/1699125962938470774) 2023-09-05T18:22Z 46.7K followers, [----] engagements "@VivekGRamaswamy There are two sexes because there are only two roles in reproduction: the sex that provides the sperm and the sex that provides the egg" [X Link](https://x.com/zaelefty/status/1699164464149319914) 2023-09-05T20:55Z 46.7K followers, 24K engagements "What does this cover design mean And what's the story behind its creation The illustration is a binary star system rising above a sand-like landscape reminiscent of Frank Herbert's sci-fi epic Dune. Yet this visual also hints at the universal difference in gamete size that defines the sexes across the vast array of plant and animal life. We wanted something monolithic for the binary interacting with and pushing away the amorphous spectrum. We also wanted a visual that was timeless and abstract something that hinted at our evolutionary origins since the divergence of gametes into two extreme" [X Link](https://x.com/zaelefty/status/1699182809229729983) 2023-09-05T22:08Z 42.7K followers, [----] engagements "1.2 billion years of male-female reproduction having evolved independently across nearly all lineages of multicellular species is far from pseudoscientific religious dogma. @zaelefty @VivekGRamaswamy Piffle. Pure pseudoscience based on Christian (and only Christian) religious dogma. @zaelefty @VivekGRamaswamy Piffle. Pure pseudoscience based on Christian (and only Christian) religious dogma" [X Link](https://x.com/zaelefty/status/1699198808935063756) 2023-09-05T23:12Z 47.2K followers, [----] engagements "Can you be physically a human but mentally a cat" [X Link](https://x.com/zaelefty/status/1699200563097793013) 2023-09-05T23:19Z 46.7K followers, [----] engagements "Binary sex was invented by Nature circa [---] billion years BC" [X Link](https://x.com/zaelefty/status/1699206252247572553) 2023-09-05T23:41Z 46.7K followers, 19.5K engagements "Ive written [--] books on variation. Variation is a cornerstone of biology but this has to be understood within the correct evolutionary and developmental framework. Sex-based variation occurs within each of the two sexes not outside of them. @zaelefty Variation is in fact a REQUIREMENT of evolution dumbass. Your rigid ideological sex binary is indeed born of society. In nature animals come in all kinds of different shapes and sizes. It's you who is trying (and failing) to fit them into [--] rigid categories. @zaelefty Variation is in fact a REQUIREMENT of evolution dumbass. Your rigid ideological" [X Link](https://x.com/zaelefty/status/1699235918828155202) 2023-09-06T01:39Z 47.1K followers, [----] engagements "Im talking about the origin of anisogamy the divergence of gametes into two differences sizes which is the first step towards sexual dimorphism and the origin of the two sexes" [X Link](https://x.com/zaelefty/status/1699237158161195472) 2023-09-06T01:44Z 46.7K followers, [----] engagements "Hermaphrodites are examples of the male and female sexes composed in the same individual. Two sexes in one. They are not an example of another sex. @zaelefty @VivekGRamaswamy https://t.co/RkKj4LhMnf @zaelefty @VivekGRamaswamy https://t.co/RkKj4LhMnf" [X Link](https://x.com/zaelefty/status/1699278358717026568) 2023-09-06T04:28Z 47.1K followers, [----] engagements "@tearsoftechno @VivekGRamaswamy We're talking about sex" [X Link](https://x.com/zaelefty/status/1699285840189391057) 2023-09-06T04:58Z 46.7K followers, [---] engagements "Since gender activists are now using bees to disprove the sex binary will I now need to make a long post about how and why bees only have two sexes and how their sex determination system works 🧐" [X Link](https://x.com/zaelefty/status/1699439922497626174) 2023-09-06T15:10Z 47K followers, 44.7K engagements "I love writing about and teaching biology. Im continually learning so much with you all as well" [X Link](https://x.com/zaelefty/status/1699539709020569775) 2023-09-06T21:46Z 46.7K followers, [----] engagements "This is called quantum flapdoodlethe misapplication of quantum physics to try and validate unrelated topics" [X Link](https://x.com/zaelefty/status/1699544275120255438) 2023-09-06T22:05Z 46.7K followers, 12.3K engagements "Citation please" [X Link](https://x.com/zaelefty/status/1699799688872927252) 2023-09-07T15:00Z 46.7K followers, 27.8K engagements "Plants produce sperm and eggs. Male plants produce sperm cells inside gametophytes called pollen which land on another plant with female parts grow long tubes into the ovule where the egg is housed and shoot the sperm cells inside to fertilize the egg" [X Link](https://x.com/zaelefty/status/1699809398191743283) 2023-09-07T15:38Z 47.1K followers, [----] engagements "Amazing how many people in this thread dont know how anisogamous plants and animals work" [X Link](https://x.com/zaelefty/status/1699855098573172868) 2023-09-07T18:40Z 46.7K followers, [----] engagements "Gender activists think its a self-own for us to correctly state that almost all plant species produce sperm. When they think of sperm they think of mammalian sperm because to them everything is about appearancewhat things look like. They dont care about evolved function" [X Link](https://x.com/zaelefty/status/1699855844685250828) 2023-09-07T18:43Z 47.1K followers, [----] engagements "Readers are assuming that this is an embryo but it's not. The structures they created were formed with stem cells that were "coaxed" with chemicals to get them to activate certain programmed functions. The various functions that were activated each have a role in the formation of the foundational cellular structures that make up an early embryo. The cells were given signals to do a specific function and they arranged themselves together into those specific structures. The fail rate for this phenomenon was reported as 99% with only 1% being successful in assembling themselves. On top of this" [X Link](https://x.com/zaelefty/status/1699876756348387471) 2023-09-07T20:06Z 46.7K followers, [----] engagements "@mistiepix An entire book reinforced by the existence of bees. https://x.com/zaelefty/status/1699894438367994148s=20 https://x.com/zaelefty/status/1699894438367994148s=20" [X Link](https://x.com/zaelefty/status/1699895705094222331) 2023-09-07T21:21Z 47.1K followers, [----] engagements "I'll tell you. XXY: - Differentiation of gonads into testes - Production of AMH and T - Male internal and external genitalia - Unambiguous male X: - Differentiation of gonads into ovaries - Lack of second X results in primary ovarian failure - Lack of AMH and T - Female internal and external genitalia - Unambiguous female XXX: - Differentiation of gonads into ovaries - Lack of AMH and T - Female internal and external genitalia - Unambiguous female" [X Link](https://x.com/zaelefty/status/1699936614993064298) 2023-09-08T00:04Z 46.7K followers, 12.8K engagements "Guys and gals. Most plants produce sperm and eggs just as animals produce sperm and eggs. It's just that they look different but they still have the same function. The male part of a plant produces pollen which produce the sperm. The female part of a plant produces ovules which produce the eggs. When a pollen grain loves a female plant very much it lands on the plant grows long tubes down to the ovule where the egg is housed and shoots sperm cells into it fertilizing the egg" [X Link](https://x.com/zaelefty/status/1699962053690044579) 2023-09-08T01:45Z 46.7K followers, [----] engagements "Plants only have male and female sexes whether they are composed in the same flower on the same plant (perfect flowers) in separate flowers on the same plant (monoecious) or in separate plants altogether (dioecious). These are all examples of binarytwosexes" [X Link](https://x.com/zaelefty/status/1699966650487828578) 2023-09-08T02:03Z 46.7K followers, [----] engagements "Notice the sperm and egg cells in this diagram Also notice that we are looking at plants not animals. Be sure to tell the gender activists who think no plant produces sperm and eggs. In reality almost every plant species does 🤓" [X Link](https://x.com/zaelefty/status/1699970954103865579) 2023-09-08T02:20Z 46.7K followers, [----] engagements "Gender researchers have discovered two new gamete types hybrids between sperm and egg known as spergs and speggs 👨🔬 The discovery paper has been published in the journal of Spectrum Mechanics. A detailed diagram below shows the form of these new gamete types 🥸" [X Link](https://x.com/zaelefty/status/1700146843672355108) 2023-09-08T13:59Z 46.7K followers, 118.4K engagements "Yes many are and they all reproduce through sperm and egg. This is what the binary means. It does not require that all species have male and female sexes separated into two distinct individuals. It just requires that there are only two sexes. most plants are literally hermaphrodites most plants are literally hermaphrodites" [X Link](https://x.com/zaelefty/status/1700199760395690152) 2023-09-08T17:29Z 47.1K followers, [----] engagements "@Irreversib42456 Monoecious is technically male and female flowers on the same plant but separated into different flowers (Male vs female flowers on same plant). Hermaphrodite or perfect flowers are individuals flowers that are male AND female on the same plant" [X Link](https://x.com/zaelefty/status/1700208022918775048) 2023-09-08T18:02Z 46.7K followers, [--] engagements "The systems you described still involve the fusion of male and female gametes you chucklenuggets. @LactivistSinger while the basic system of reproduction in lots of plants involves the fusion of male and female gametes some individual plants do not neatly fit into binaries. For example in some species there are no separate female and male plants (they are hermaphroditic). Flowers can 2/3 @LactivistSinger while the basic system of reproduction in lots of plants involves the fusion of male and female gametes some individual plants do not neatly fit into binaries. For example in some species" [X Link](https://x.com/zaelefty/status/1700244500759634139) 2023-09-08T20:27Z 47.2K followers, [----] engagements "The idea that you can be born in the wrong body posits a soul / body dualism along with an "is / ought" fallacy that claims to know what should be from what is. It's a metaphysical claim and it does harm to those you are telling have been born in the wrong body" [X Link](https://x.com/zaelefty/status/1700325450155749769) 2023-09-09T01:49Z 46.7K followers, 19.2K engagements "READ: There Is No Trans Genocide Gender activists often claim that genocide is being committed against the trans community via anti-trans laws. An analysis of the evidence shows an ugly truth but not in the way one would expect. @shamanspirit13" [X Link](https://x.com/zaelefty/status/1700479385403367869) 2023-09-09T12:00Z 46.7K followers, 13.3K engagements "WATCH: Why Sex Is Binary 📽" [X Link](https://x.com/zaelefty/status/1700553431906144459) 2023-09-09T16:55Z 46.7K followers, [----] engagements "Understanding the evolutionary and developmental biology of male and female and the important differences between them in humans and across the vast diversity of life is not misogyny nor patriarchal. Its exactly the opposite" [X Link](https://x.com/zaelefty/status/1700908517668905329) 2023-09-10T16:26Z 47K followers, [----] engagements "PCOS is not an "intersex" condition by any definition of the word. PCOS is polycystic ovarian syndrome and it results in unusual levels of androgen production in typical females. "Intersex" is a misnomer umbrella term for conditions that result in sex ambiguity or a mismatch between chromosomes and phenotype. Women with PCOS have no such qualities. They are unambiguous females with typical reproductive systems" [X Link](https://x.com/zaelefty/status/1700955364563255503) 2023-09-10T19:32Z 46.7K followers, 159.3K engagements "Thank you for the summon. PCOS is not an "intersex" condition. PCOS is polycystic ovarian syndrome and it results in unusual levels of androgen production in typical females. "Intersex" is a misnomer umbrella term for conditions that result in sex ambiguity or a mismatch between chromosomes and phenotype. Women with PCOS have no such qualities. They are unambiguous females with typical reproductive systems" [X Link](https://x.com/zaelefty/status/1700955509136724013) 2023-09-10T19:32Z 46.7K followers, [----] engagements "Generation of two sexes (male and female) is an essential and universal phenomenon among animals to reproduce and maintain their existence. From a [----] peer-reviewed paper in the journal Scientific Reports by Nature" [X Link](https://x.com/zaelefty/status/1700978276200755597) 2023-09-10T21:03Z 46.7K followers, [----] engagements "READ: The Ugly Truth of Male Breastfeeding In this detailed piece @shamanspirit13 analyzes the literature on artificially-induced male breastfeeding to see if it is safe and healthy for the infant. Short answer: it's not" [X Link](https://x.com/zaelefty/status/1701219147659501714) 2023-09-11T13:00Z 46.7K followers, 13.6K engagements "Sex is not for reproduction. Thats the fundamental evolved function. This is like saying eyes are not for sight. @zaelefty The absence of an intersex gamete does not mean that there is no intersex sex. Because sex is not for reproduction. If sex were for reproduction all endosex individuals would reproduce. Gender is for being known and recognized. @zaelefty The absence of an intersex gamete does not mean that there is no intersex sex. Because sex is not for reproduction. If sex were for reproduction all endosex individuals would reproduce. Gender is for being known and recognized" [X Link](https://x.com/zaelefty/status/1701576331429900448) 2023-09-12T12:39Z 47K followers, 19.7K engagements "It is a mistake to believe that by taking down one head of gender ideology you will achieve success. You must strike at the foundation the heart of the hydra the fiction upon which the rest depends. Article by @PTElephant" [X Link](https://x.com/zaelefty/status/1701928860323827875) 2023-09-13T12:00Z 46.7K followers, [----] engagements "READ: Ethics Science and History of Uterine Transplants in Males Since the first uterine transplant in the US doctors have been theorizing if a uterus transplant could be possible for a transwoman. Case studies say otherwise. @shamanspirit13" [X Link](https://x.com/zaelefty/status/1702039301423325453) 2023-09-13T19:19Z 46.7K followers, [----] engagements "Yes males have these genes just like females. All three of these genes are located on the autosomes. In the male embryo the SRY genetic pathway blocks them from upregulating for ovarian development and testes development occurs instead" [X Link](https://x.com/zaelefty/status/1702110727975108683) 2023-09-14T00:03Z 42.8K followers, [----] engagements "READ: The "brain sex hypothesis" posits that gender dysphoria is rooted in having a brain that aligns with a different sex. In part [--] of this new multi-part series @NeuroSGS begins with an analysis of the BSTc" [X Link](https://x.com/zaelefty/status/1702336831243817303) 2023-09-14T15:01Z 46.7K followers, [----] engagements "When people use the term "intersex" they are often describing all disorders that impact the development of the reproductive system. These disorders impact males or females. And it's this sex-specific knowledge that allows us to treat them accurately. For example you would call a woman with Turner Syndrome (45:X) "intersex." But she develops an unambiguous female reproductive system. It's just that her ovaries are underdeveloped resulting in hormone deficiencies. Her single X chromosome results in heart defects and other physical abnormalities. Her only chance for fertility is through the" [X Link](https://x.com/zaelefty/status/1702471951472554382) 2023-09-14T23:58Z 47.1K followers, 526.9K engagements "READ: There Is No Trans Genocide Gender activists often claim that genocide is being committed against the trans community via anti-trans laws. An analysis of the evidence shows an ugly truth but not in the way one would expect. @shamanspirit13" [X Link](https://x.com/zaelefty/status/1703016090488479791) 2023-09-16T12:00Z 46.7K followers, [---] engagements "I get my information straight from peer-reviewed research" [X Link](https://x.com/zaelefty/status/1703113082220781788) 2023-09-16T18:26Z 46.7K followers, [----] engagements ""Sex itself of course doesn't actually exist."" [X Link](https://x.com/zaelefty/status/1703240573161766971) 2023-09-17T02:52Z 46.7K followers, [----] engagements "There are a fascinating number of mechanisms nature has evolved to produce males and females across different species. XX/XY XX/XO ZZ/ZW Temperature Ratio of sex chromosomes to autosomes Gene dosage Haploid/diploid And many more. And yet with all these different mechanisms there is always a consistent outcome of male or female individuals. Incredible isn't it" [X Link](https://x.com/zaelefty/status/1703245276528439347) 2023-09-17T03:11Z 46.7K followers, 13.8K engagements "What would you call permanent infertility Hormonal deficiencies Genital abnormalities Life threatening heart defects These are disorders. Were not calling people disordered. Were correctly calling the conditions themselves disorders" [X Link](https://x.com/zaelefty/status/1703429120397373499) 2023-09-17T15:22Z 46.7K followers, [----] engagements "The idea that sex exists on a continuum between male and female that male and female cannot be reliably defined and that one's internal sense of self determines sex--this is the sex spectrum. It is indeed one of the most popular cultural myths ever spread" [X Link](https://x.com/zaelefty/status/1703537459005399372) 2023-09-17T22:32Z 46.7K followers, [----] engagements "READ: The Ugly Truth of Male Breastfeeding In this detailed piece @shamanspirit13 analyzes the literature on artificially-induced male breastfeeding to see if it is safe and healthy for the infant. Short answer: it's not" [X Link](https://x.com/zaelefty/status/1703755835472572727) 2023-09-18T13:00Z 46.7K followers, [----] engagements "Imagine responding this way about other types of disorders. Explain blind people. Explain Down syndrome people. How about you leave people with congenital disorders alone. They dont exist to validate your crazy ideas about reality" [X Link](https://x.com/zaelefty/status/1703819106741317632) 2023-09-18T17:11Z 46.7K followers, 53.1K engagements "Most disorders that impact the reproductive system result in infertility and other severe physiological issues many of which require lifelong medical treatment. Some specific disorders can result in additional cognitive and physical handicaps" [X Link](https://x.com/zaelefty/status/1703905382136004939) 2023-09-18T22:54Z 46.7K followers, [----] engagements "And yet delusional males think they can do this too" [X Link](https://x.com/zaelefty/status/1704114872873595122) 2023-09-19T12:47Z 46.7K followers, 10.6K engagements "During puberty the reception of high levels of testosterone through the hypothalamic-pituitary-gonadal axis is critical for males. Block this axis as puberty blockers do and you'll end up with a host of physical and cognitive issues. Researchers have tested the effects of" [X Link](https://x.com/zaelefty/status/1704138494979764296) 2023-09-19T14:20Z 46.7K followers, [----] engagements "Male puberty happens because the hypothalamus tells the pituitary to produce luteinizing hormone (LH) and follicular stimulating hormone (FSH) which tells the testes to produce more testosterone. This creates a feedback loop between the hypothalamus the pituitary and the gonad known as the HPG axis. Through puberty the male will reach circulating T levels 15-20x higher than his female counterpart and through this activation of the HPG axis his already organized reproductive structures and overall body physiology (whose structures were setup in utero) will masculinize in irreversible ways." [X Link](https://x.com/zaelefty/status/1704145872076800482) 2023-09-19T14:50Z 47K followers, 129K engagements "Transgender people do not have a mismatch of chromosomes and phenotype or ambiguous sex characteristics. They are born as typical healthy males or females with no reproductive disorder" [X Link](https://x.com/zaelefty/status/1704336794374795681) 2023-09-20T03:28Z 43.7K followers, 58K engagements "Intersex people do not challenge the sex binary. See below: When people use the term "intersex" they are often describing all disorders that impact the development of the reproductive system. These disorders impact males or females. And it's this sex-specific knowledge that allows us to treat them accurately. For example you would call a woman with Turner Syndrome (45:X) "intersex." But she develops an unambiguous female reproductive system. It's just that her ovaries are underdeveloped resulting in hormone deficiencies. Her single X chromosome results in heart defects and other physical" [X Link](https://x.com/zaelefty/status/1704368168477528223) 2023-09-20T05:33Z 43.7K followers, 12.3K engagements "It is a mistake to believe that by taking down one head of gender ideology you will achieve success. You must strike at the foundation the heart of the hydra the fiction upon which the rest depends. Article by @PTElephant" [X Link](https://x.com/zaelefty/status/1704465575613722912) 2023-09-20T12:00Z 46.7K followers, [----] engagements "Males and females both produce testosterone and estrogen but they are produced in far different amounts and serve sex-specific purposes. For example males produce 15-20x more testosterone than females and have sex-specific roles for the hormone in their body tissues and physiology" [X Link](https://x.com/zaelefty/status/1704496873761886417) 2023-09-20T14:04Z 46.7K followers, 26.7K engagements "What are the effects of blocking puberty in females Pubertal development in females requires the reception of sex hormones through the hypothalamic-pituitary-gonadal axis. Block this axis as puberty blockers do and you'll end up with a host of physical and cognitive issues. Researchers have tested the effects of blocking this axis in female mice. For example when puberty suppressors are given to female mice there is reduced bone mass acquisition and bone strength; increased risk of obesity; decreased uterine and ovarian weights; completely absent follicle maturation (no mature eggs produced);" [X Link](https://x.com/zaelefty/status/1704524346104979622) 2023-09-20T15:54Z 46.7K followers, [----] engagements "There is plenty of published research on whether males have physical advantages over females starting from the present day and going back [--] years. Veronica Ivy is just lying when he says that there is not" [X Link](https://x.com/zaelefty/status/1704928393039319362) 2023-09-21T18:39Z 46.7K followers, [----] engagements "There's [--] lies that trans-identified male Veronica Ivy utilizes in this clip about biological sex and sport. Let's break it down. [--]. "Policing whether transgender women and intersex women are really female is built in racism." While there has been historical racism against black females the recent push to ban specific intersex athletes from female sports is not due to racism but because they are males with sex development disorders. A common example is Caster Semenya a black male Olympic athlete with 5-alpha reductase deficiency who competes in the female category. Due to a deficiency in the" [X Link](https://x.com/zaelefty/status/1704949357957485019) 2023-09-21T20:02Z 42.8K followers, 1.2M engagements "There's [--] lies that trans-identified male Veronica Ivy utilizes in this clip about biological sex and sport. Let's break it down. [--]. "Policing whether transgender women and intersex women are really female is built in racism." While there has been historical racism against black females the recent push to ban specific intersex athletes from female sports is not due to racism but because they are males with sex development disorders. A common example is Caster Semenya a black male Olympic athlete with 5-alpha reductase deficiency who competes in the female category. Due to a deficiency in the" [X Link](https://x.com/zaelefty/status/1704950513916055962) 2023-09-21T20:07Z 46.7K followers, [----] engagements "There's [--] lies that trans-identified male Veronica Ivy utilizes in this clip about biological sex and sport. Let's break it down. [--]. "Policing whether transgender women and intersex women are really female is built in racism." While there has been historical racism against black females the recent push to ban specific intersex athletes from female sports is not due to racism but because they are males with sex development disorders. A common example is Caster Semenya a black male Olympic athlete with 5-alpha reductase deficiency who competes in the female category. Due to a deficiency in the" [X Link](https://x.com/zaelefty/status/1705069268927169004) 2023-09-22T03:59Z 46.7K followers, [---] engagements "There's [--] lies that trans-identified male Veronica Ivy utilizes in this clip about biological sex and sport. Let's break it down. [--]. "Policing whether transgender women and intersex women are really female is built in racism." While there has been historical racism against black females the recent push to ban specific intersex athletes from female sports is not due to racism but because they are males with sex development disorders. A common example is Caster Semenya a black male Olympic athlete with 5-alpha reductase deficiency who competes in the female category. Due to a deficiency in the" [X Link](https://x.com/zaelefty/status/1705069350254714921) 2023-09-22T03:59Z 46.7K followers, [----] engagements "Neil DeGrasse Tyson (@neiltyson) is misinformed and willfully ignorant on this topic. He claims that Semenya is a genetic female with naturally high testosterone. But this is false. Not only does Semenya have XY chromosomes but also has "make-male" genes like SRY which differentiated the gonads into normal testes. These testes produce male-typical levels of testosterone (15-20x higher than a female) that the body then receives across development masculinizing the physiology. This provides the male advantage for Semenya. Semenya has 5-alpha reductase deficiency which causes a deficiency in a" [X Link](https://x.com/anyuser/status/1705369225689186770) 2023-09-22T23:51Z [--] followers, 25K engagements "Neil DeGrasse Tyson (@neiltyson) is misinformed and willfully ignorant on this topic. He claims that Semenya is a genetic female with naturally high testosterone. But this is false. Not only does Semenya have XY chromosomes but also has "make-male" genes like SRY which differentiated the gonads into normal testes. These testes produce male-typical levels of testosterone (15-20x higher than a female) that the body then receives across development masculinizing the physiology.1 This provides the male advantage.2 Semenya has 5-alpha reductase deficiency which causes a deficiency in a hormone" [X Link](https://x.com/zaelefty/status/1705370555224859079) 2023-09-22T23:56Z 46.7K followers, [----] engagements "READ: There Is No Trans Genocide Gender activists often claim that genocide is being committed against the trans community via anti-trans laws. An analysis of the evidence shows an ugly truth but not in the way one would expect. @shamanspirit13" [X Link](https://x.com/zaelefty/status/1705552801458188599) 2023-09-23T12:00Z 46.7K followers, [----] engagements "What exactly is backed up by science [--]. The idea that you can change sex This would require the differentiation of the gonads into the opposite sex along with the reproductive anatomy to support it. This only happens in species who have evolved sequential hermaphroditism like we see in many fish.1 But humans are not fish. We are gonochoric meaning individuals are either male or female through their entire life cycle.2 [--]. The idea that trans people have brains that match their identity Studies of trans individuals which show sex differences in the brain that seem to resemble the opposite sex" [X Link](https://x.com/zaelefty/status/1705706942327337137) 2023-09-23T22:13Z 47.1K followers, 79K engagements "The way the sex of an embryo is chosen for IVF is through the sex chromosomes XX or XY. The sex chromosomes will predict sex at 100% accuracy as long as everything goes according to plan and there are no gene errors in the genetic profile of the embryo. A gene error could be something like a translocation of the SRY gene from the Y to an XX zygote resulting in a male with XX chromosomes no Y. But this is very rare. In typical reproduction it occurs in [--] in [-----] male fetuses" [X Link](https://x.com/zaelefty/status/1706052925238219144) 2023-09-24T21:08Z 47.1K followers, [----] engagements "Transwomen do not have a physical advantage over cis women." This is false. Heres why. There has been decades of research on the immense physical advantages males have over females and transwomen are almost always typical males with no sex development disorder. The strength difference between male and female bodies is vast. Equally trained males have 57% more grip strength1 65% more leg strength2 90% more total upper body strength3 and 162% more punch power.4 To put these numbers in comparison males are only 7% taller than females yet on the population level we easily see the considerable" [X Link](https://x.com/zaelefty/status/1706791488326095296) 2023-09-26T22:02Z 46.7K followers, 345.2K engagements "This is completely false. Heres why. There has been decades of research on the immense physical advantages males have over females and transwomen are almost always typical males with no sex development disorder. The strength difference between male and female bodies is vast. Equally trained males have 57% more grip strength1 65% more leg strength2 90% more total upper body strength3 and 162% more punch power.4 To put these numbers in comparison males are only 7% taller than females yet on the population level we easily see the considerable height differences between them.5 Percentages like" [X Link](https://x.com/zaelefty/status/1706819803401347546) 2023-09-26T23:55Z 46.7K followers, 111.2K engagements "It is a mistake to believe that by taking down one head of gender ideology you will achieve success. You must strike at the foundation the heart of the hydra the fiction upon which the rest depends. Article by @PTElephant" [X Link](https://x.com/zaelefty/status/1707002291625111586) 2023-09-27T12:00Z 46.7K followers, [----] engagements "The best way to learn something Teach it. [--]. Research the desired topic. [--]. Try to teach it to someone. [--]. Fill in the holes in your knowledge [--]. Review what you learned and make your teaching easier to understand. Repeat steps 2-4 as needed. This is known as the Feynman" [X Link](https://x.com/zaelefty/status/1707255858617340210) 2023-09-28T04:48Z 46.7K followers, [---] engagements "We do not all begin with female anatomy. It's unfortunate this is getting so much attention. Let's break down each of the falsehoods. [--]. "In the womb up to a certain point our anatomy is female." Every fetus begins with both a Mullerian and Wolffian duct structure. The Mullerian structure will become the female genital system. The Wolffian structure will become the male's. Therefore in the beginning the fetus's genitalia is undifferentiated. However undifferentiated is not the same as female anatomy. Undifferentiated means the genital ducts exist in a state that is neither male nor female." [X Link](https://x.com/zaelefty/status/1707473278149767587) 2023-09-28T19:12Z 46.7K followers, 13.4K engagements "It is good this paper recognizes that sex plays a fundamental role in sports performance advantage but they make one glaring error in their mention of intersex. They claim that intersex makes up 2% of the population. The clinical usage of intersex refers to conditions that result in a mismatch of chromosomes and phenotype or ambiguous sex markers. These are extremely rare around 0.018% not 2%. The 2% figure is an even more inflated figure from Anne Fausto-Sterlings 1.7% which includes a host of reproductive disorders that result in no ambiguity whatsoever. The other error they make is" [X Link](https://x.com/zaelefty/status/1707782511273660727) 2023-09-29T15:40Z 46.7K followers, 175.5K engagements "I received a review of Binary saying it is "Unfactual and gossipy garbage." Considering the book sources its info straight from hundreds of evidence-based scientific papers and utilizes hundreds of in-text citations it is very much based in fact 🤓" [X Link](https://x.com/zaelefty/status/1708551658613911563) 2023-10-01T18:37Z 46.7K followers, 26.6K engagements "People have asked me how to evaluate the accuracy of scientific papers. I will discuss more on this later but for now here are some good [--] steps to utilize (from the website The Logic of Science). [--]. Read the original study yourself [--]. Dont rely on titles and abstracts [--]. Acquire the necessary background knowledge [--]. Make sure that the paper is published in a legitimate journal [--]. Check the authors for relevant expertise and conflicts of interest [--]. See if the journals impact factor matches the papers claims [--]. Make sure that the study was designed conducted and analyzed correctly [--]. See if" [X Link](https://x.com/zaelefty/status/1708564887918555377) 2023-10-01T19:29Z 46.7K followers, 13.1K engagements "The gender critical "myth" that sex is binary and immutable in humans is not a myth but an evolutionary fact. What "myth" did you debunk in this piece Do you mean the fact that there are only two sexes across the vast diversity of life--male and female The fact that the two sexes have existed for more than one billion years The fact male and female bodies are organized according to different functions The fact there are more than [----] gene expression differences between males and females The fact that testosterone and estrogen are produced in vastly different amounts between the sexes" [X Link](https://x.com/zaelefty/status/1708946301633634433) 2023-10-02T20:45Z 46.7K followers, 29.7K engagements "Yes the Y chromosome has been lost in some species of rat and vole due to its inability to fully recombine with the X. Over time this leads to mutations and degradation. But even though it's gone males are still produced. Why The answer is genes. Genes maintain the binary system consistently producing males and females" [X Link](https://x.com/zaelefty/status/1709003209614795191) 2023-10-03T00:31Z 46.7K followers, [----] engagements "Cross-sex hormone use in males (female-typical levels of estrogen and testosterone) has a host of detrimental effects to the body. The male body is organized around specific levels of testosterone and estrogen across development. When these are altered to female levels a disorder is induced. And the effects are seen across almost all body tissues. Beginning in the reproductive system high E and low T can result in severely impaired reduction of sperm levels to complete cessation of sperm production full testicular regression with severe cellular damage 25% reduction in testicular volume by" [X Link](https://x.com/zaelefty/status/1709070273398374804) 2023-10-03T04:58Z 43.7K followers, 276.1K engagements "You are conflating what bodies look like with what reproductive function bodies are organized around. Genetic information can get translocated but the genetic sex determination system results in anatomy organized around sperm or eggs. Genetic disorders that result in sterility are not evidence that sex in humans is mutable or that it is not binary" [X Link](https://x.com/zaelefty/status/1709242527205797923) 2023-10-03T16:22Z 46.7K followers, [----] engagements "Understanding the truth is my first motivation. My second motivation is educating others on why taking cross-sex hormones at opposite sex levels is damaging to your bodily tissues long term and can have permanent effects. This does not bring about a sex change. It induces a disorder" [X Link](https://x.com/zaelefty/status/1709285262826586447) 2023-10-03T19:12Z 46.7K followers, 12K engagements "What questions would you have for a plastic surgeon in regards to ethics and gender-affirming care" [X Link](https://x.com/zaelefty/status/1709331519259521180) 2023-10-03T22:16Z 46.7K followers, [----] engagements "Great textbook on developmental biology by Oxford. Here are some good sections on how sex is genetically set at conception how we do not all begin as females and how development of the reproductive ducts work" [X Link](https://x.com/zaelefty/status/1709396579688300929) 2023-10-04T02:34Z 46.7K followers, [----] engagements "It is also worth noting that this book is very up-to-date in regards to sex development. It discusses how recent work in genetics shows that female is not the default path and that gene networks involved in developing either sex actively repress the opposite sex pathway" [X Link](https://x.com/zaelefty/status/1709397397585936418) 2023-10-04T02:37Z 46.7K followers, [----] engagements "Sexes are defined by the difference in gamete size. Males produce sperm females produce eggs. Intersex people are either sterile or produce either sperm or eggs and are therefore male or female. They do not produce a third gamete type and therefore are not a third sex" [X Link](https://x.com/zaelefty/status/1709415604791251298) 2023-10-04T03:50Z 43.8K followers, 91.6K engagements "With the Queer Ideology in full swing claiming that gender is fluid or sex can be changed Binary comes in with facts data and science based answers. Order now on Amazon. http://mybook.to/binary http://mybook.to/binary" [X Link](https://x.com/zaelefty/status/1709436776710889969) 2023-10-04T05:14Z 47K followers, [----] engagements "Do you know the model for the evolution of sex from isogamy to anisogamy Or the molecular differences between mating types and sexes Or why there are two sexes in the first place What about the detailed developmental genetics involved in producing males vs females in humans Or what about the developmental genetics of [--] disorders of sex development Or the diversity of sex determination mechanisms across species Have you written [--] books on the subject Produced 20+ animated videos I know biology well enough to help educate others. Thats why Im able to effectively communicate complex concepts." [X Link](https://x.com/zaelefty/status/1709444519828021530) 2023-10-04T05:45Z 47.1K followers, 26.8K engagements "Scientists can now predict sex with 99% accuracy by looking at your fingerprint. How Small amounts of sweat from the fingers release amino acids and females release about twice the amount of amino acids in their sweat compared to males largely due to hormonal differences. The test is so reliable because testosterone and estrogen levels (but especially T) rarely overlap between the sexes. The problem with this approach of course is that because it seems to be largely hormonally driven those taking opposite sex levels of cross-sex hormones may muddy the results but this is yet to be determined." [X Link](https://x.com/zaelefty/status/1709594527051227213) 2023-10-04T15:41Z 47.2K followers, 82.2K engagements Limited data mode. Full metrics available with subscription: lunarcrush.com/pricing
@zaelefty Zachary Elliott
Zachary Elliott posts on X about eggs, has been, there is, if you the most. They currently have [------] followers and [---] posts still getting attention that total [-------] engagements in the last [--] hours.
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Social Influence
Social category influence technology brands social networks finance countries celebrities stocks travel destinations us election
Social topic influence eggs, has been, there is, if you, transgender, humans, in the, youtube, binary, not a
Top assets mentioned BINARY (BINARY) Reddit, Inc. (RDDT) Sperm (SPERM) GrokCoin (GROKCOIN) Alphabet Inc Class A (GOOGL)
Top Social Posts
Top posts by engagements in the last [--] hours
"@Woman4W If you'd like I can send you a dropbox link to six peer reviewed science papers from experts in the field of sex determination showing that sex is a binary category operating under complex mechanisms in the womb which determine whether you're a male or female"
X Link 2020-02-04T16:03Z 51.4K followers, [--] engagements
"@xaerorazor And yes you can have a mix of both types of gonadal tissue. You can also have vestigial Wolffian or vestigial Mullerian structures which fail to disintegrate amidst hormones or lack thereof"
X Link 2020-04-30T04:42Z 47.1K followers, [--] engagements
"'Stop Using Phony Science to Justify Transphobia' is another Scientific American article using the complexities of sex determination and the diversity of sex differences to argue that sex is not binary. Let's talk about it THREAD (citations numbered) https://blogs.scientificamerican.com/voices/stop-using-phony-science-to-justify-transphobia/ https://blogs.scientificamerican.com/voices/stop-using-phony-science-to-justify-transphobia/"
X Link 2020-07-08T21:06Z 51.3K followers, [----] engagements
"Intersex conditions are not between male and female. Intersex conditions represent the variation of anatomy and physiology within males and within females"
X Link 2020-08-10T21:38Z 51.3K followers, [---] engagements
"Trans activists like to muddy the waters of male and female by pointing out a variety of atypical karyotypes and conflating them with sex. But karyotype =/= sex. There are only two sexes. Original graphic by @AlexAlicit"
X Link 2021-06-20T19:21Z 51.4K followers, [---] engagements
"@RuntimeTraveler Youre forgetting the word phenotype in the definition which includes the genetically determined structures involved in producing and transporting gametes"
X Link 2023-02-08T01:28Z 47.3K followers, [--] engagements
"@RoombaReborn @DunkedHobnobs @lecanardnoir @Jarster2608 @mrjb260191 @B_Doe1994 @TmarTn Simple: She's female because she developed the large gamete role. Because of her genetics she developed the reproductive structures involved in producing and releasing eggs and gestating a fetus"
X Link 2023-02-10T00:35Z 47.3K followers, [---] engagements
"This mosaic XY female is female because she developed the large gamete role. Because of her genetics she developed the reproductive structures involved in producing and releasing eggs and gestating a fetus. @DunkedHobnobs @lecanardnoir @Jarster2608 @mrjb260191 @B_Doe1994 @TmarTn And since we're arguing the sex binary if it's the sry gene that determines your sex how would you explain this woman with the active sry gene who was assigned female at birth and gave birth to a child herself https://t.co/7oSG6ldDSa @DunkedHobnobs @lecanardnoir @Jarster2608 @mrjb260191 @B_Doe1994 @TmarTn And since"
X Link 2023-02-10T00:42Z 47.3K followers, [----] engagements
"This is why you do not have to be currently producing gametes to have a sex. An organism's sex can be identified by the structures involved in producing and transporting eggs or sperm. The best indicator of sex is gonad type since this is where the gametes are produced"
X Link 2023-04-08T01:33Z 47.3K followers, 23.6K engagements
"@heartsalty @Rimbaud587 Genes determine sex as in the development decision that differentiates the gonads into testes or ovaries. When you say determine you mean how we identify or observe sex. We identify sex by the structures involved in producing and releasing either sperm or eggs"
X Link 2023-04-25T18:42Z 47.3K followers, [---] engagements
"In mammals genes determine sex as in the development decision that differentiates the gonads into testes or ovaries. When you say determine you mean how we identify or observe sex. We identify sex by the structures involved in producing and releasing either sperm or eggs. @Rimbaud587 @zaelefty If he or his audience had a stem background you'd see why this doesn't prove his point. The existence of [--] gametes isn't up for debate but it's also only one factor in determining sex. @Rimbaud587 @zaelefty If he or his audience had a stem background you'd see why this doesn't prove his point. The"
X Link 2023-04-25T18:45Z 47.3K followers, [----] engagements
"The universal biological definition of the sexes"
X Link 2023-05-24T14:01Z 47K followers, 411.8K engagements
"WATCH: The Male Advantage in Sports 📽 Detailed analysis of the scientific data on why testosterone suppression does not eliminate the male performance advantage in sports"
X Link 2023-06-30T00:37Z 46.7K followers, 131.7K engagements
"@espiers Males have a 160% more punch power compared to an equally trained female. Good luck"
X Link 2023-05-25T20:37Z 43K followers, [---] engagements
"From a peer-reviewed paper on male lactation: We should therefore rethink what successful breastfeeding means. The main goal of lactation induction in transgender women may not necessarily be milk production but rather the nonnutritional benefits that come from breastfeeding"
X Link 2023-07-07T20:05Z 47.4K followers, 1.6M engagements
"In summary lactation induction is likely beneficial for gender identity irrespective of milk production outcomes"
X Link 2023-07-07T20:22Z 47.1K followers, 71.2K engagements
"It takes a special kind of evil to use your own child to validate your perversions"
X Link 2023-07-09T00:46Z 46.7K followers, [----] engagements
"Never confuse education with intelligence. You can have a PhD and still be an idiot. Richard Feynman"
X Link 2023-07-09T01:14Z 46.7K followers, 10.6K engagements
"@KatieInBoston1 @emmakennytv @oldscousema @LGBTSRH Have some perspective Katie. This was over two years ago before I fully understood the nuances of the terminology long before I met you. You know what my stance is now. I respect your passion for helping educate on DSDs and your condition but this is getting tiresome"
X Link 2023-07-09T02:21Z 46.7K followers, [--] engagements
"Arrogance and ignorance is an incredibly destructive combination"
X Link 2023-07-10T16:57Z 46.7K followers, [----] engagements
"Much of the media is treating the Caster Semenya case as though this is discriminating against a woman for high T levels. But Semenyas disorder is a male DSD and the male performance adv. is retained. See our animated video on the biology of 5-ARD"
X Link 2023-07-11T21:14Z 46.7K followers, 82.5K engagements
"See this sex development chart of 5-ARD. The condition does not impact the reception of T from the testes it simply impacts the production of DHT involved in completing the males external genitalia"
X Link 2023-07-11T21:14Z 46.7K followers, [----] engagements
"ABC News reported that Caster Semenya has a DSD causing "high testosterone levels." This is false. 5-ARD results in lack of DHT which pauses the dev of external male genitalia. The high T is not a product of the disorder; it is a product of Semenya's sex which is male"
X Link 2023-07-12T01:51Z 46.7K followers, 44.2K engagements
"An excellent scientific summary of 5-ARD and whether it negatively impacts the male sports performance advantage. Long story short: It does not"
X Link 2023-07-12T03:18Z 46.7K followers, 15.2K engagements
"Since the first uterine transplant in the US doctors have been theorizing if a uterus transplant could be possible for a transwoman. Case studies say otherwise. Fascinating article by @shamanspirit13"
X Link 2023-07-18T00:21Z 46.7K followers, [----] engagements
"Your gender identity is a belief system. Making misgendering a criminal offense is to compel others to profess their unwavering alignment with your subjective belief system through threat of the State"
X Link 2023-07-20T01:24Z 46.7K followers, 21.6K engagements
"Gender identity is a subjective unfalsifiable belief system that has no business being compelled by law"
X Link 2023-07-20T01:24Z 46.7K followers, 30K engagements
"You cannot identify out of your species age or sex. You can view yourself however you like but it does not change material reality"
X Link 2023-07-20T01:16Z 46.7K followers, 19.5K engagements
"No good data claims that 4% of the population is intersex unless you expand the definition so wide until it becomes meaningless where even small variations in peoples physiology makes them intersex. Are you a woman with slightly higher T Congrats Youre intersex now Clinically intersex refers to disorders that result in a phenotype that is opposite of what is expected from the chromosomes or a mix of male and female organs. Examples would include XX male syndrome (typical male system with XX chromosomes) or PMDS (males with a vestigial uterus). But when that definition is used the rate is"
X Link 2023-07-27T05:11Z 46.7K followers, 232.9K engagements
"Imagine thinking that one of the most fundamental ancient biological phenomenon was created by men"
X Link 2023-08-05T21:49Z 46.7K followers, 136.8K engagements
"Males produce sperm. Females produce eggs. This is the fundamental difference between the sexes and it applies to humans just as it applies to other mammals to birds to fish to insects and even to plants. Its one of the most ancient phenomena in biology"
X Link 2023-07-28T13:18Z 47.1K followers, 31.7K engagements
"The four principles of the sex binary"
X Link 2023-08-02T19:21Z 46.7K followers, 18.9K engagements
"You dont need to be a biologist to know there are two sexes but understanding advanced biology helps reinforce this fact because the science of evolution and development reveals the male-female binary is a far deeper truth about nature than one might expect. Mathematical modeling and empirical observation has shown that the emergence of two sexes is an inevitable consequence of sexual reproduction and that the two sexes have evolved independently in nearly all lineages of multicellular species. Its practically a law of nature as organisms become more complex. [--] Kirk D. (2006). Oogamyinventing"
X Link 2023-08-03T08:44Z 47.1K followers, 13.7K engagements
"Womanhood is dependent on developing the body plan that produces eggs. You dont have to actively produce eggs to be a woman but you do have to go down the female developmental pathway in the womb"
X Link 2023-08-06T11:50Z 46.7K followers, 32.6K engagements
"The strength difference between male and female bodies is vast. On average males have: - 57% more grip strength [--] - 65% more leg strength [--] - 90% more total upper body strength [--] - 162% more punch power [--] To put these numbers in comparison males are only 7% taller than females yet on the population level we easily see the considerable height differences between them.5 Percentages like 50-160% are therefore immense and have considerably less overlap between the sexes. The musculoskeletal differences between equally trained males and females are so large that there is no way males can compete"
X Link 2023-08-06T12:03Z 43.7K followers, 3.1M engagements
"WATCH: The Male Advantage in Sports 📽 Detailed analysis of the scientific data on why testosterone suppression does not eliminate the male performance advantage in sports"
X Link 2023-08-06T16:24Z 46.7K followers, 113.7K engagements
"This is false. We all begin phenotypically indifferent (undifferentiated). In the embryo the gonads begin bipotential until they differentiate into testes or ovaries based on genetic triggers around the 6th week. At this stage and before the fetus has the primordial genital ducts of both sexes. One is regressed in embryonic development and the other differentiates and stabilizes. People often assume that "undifferentiated" = female but developing as a female is an active gene-directed process that requires a specific path of differentiation. The first step in this pathway is the"
X Link 2023-08-06T18:02Z 46.7K followers, 26.2K engagements
"Sex is defined as the phenotype (determined by genetics) that has the function of producing sperm vs producing eggs regardless of present functionality. This is developed in the womb and in mammals it cannot be changed. For more see: [--] Lehtonen J. Parker G. (2014). Gamete competition gamete limitation and the evolution of two sexes. Molecular Human Reproduction 20(12). [--] Holub A. Shackelford T. (2021). Gonochorism. Encyclopedia of Animal Cognition and Behavior. Springer. Thank you to @sarannadam for the summon"
X Link 2023-08-07T22:06Z 46.7K followers, 20.3K engagements
""Maybe we aren't gender bits. Maybe we are gender qubits." @neiltyson pulls a quantum flapdoodle which involves the misapplication of quantum physics to unrelated topics"
X Link 2023-08-09T00:09Z 46.7K followers, 13.7K engagements
"Mammals are gonochoric. This includes humans"
X Link 2023-08-09T14:05Z 46.7K followers, 13K engagements
"Males have 57% more grip strength than an equally trained female. There's not much overlap between the sexes. Now imagine 162% more punch power which males have over females"
X Link 2023-08-11T04:37Z 46.7K followers, 27.3K engagements
"Males produce 15-20 times more T than females. The highest T levels in a female are still [--] times lower than the lowest T levels in a male. There is usually almost no overlap between sexes here"
X Link 2023-08-11T20:27Z 46.7K followers, [----] engagements
"An animated video response to @sciam's sex spectrum article "Stop Using Phony Science to Justify Transphobia.""
X Link 2023-08-12T01:34Z 46.7K followers, 12.7K engagements
"Look at all the genes involved in making testes and all the genes involved in making ovaries. There is not "only a single gene difference between them." Development of ovaries vs testes is regulated by a mutually antagonistic network of genes. And in mammals once the differentiation of the bipotential gonad has progressed far enough in the embryo it cannot be changed into the other gonad type. [--] Leon N. Reyes A. Harley V. (2019). Differences of sex development: the road to diagnosis. Lancet Diabetes Endocrinology. [--] Warr N. et al. (2012). The molecular and cellular basis of gonadal sex"
X Link 2023-08-12T06:21Z 46.7K followers, 96.4K engagements
"@primalpoly Feeding my newborn daughter 🥰"
X Link 2023-08-12T18:38Z 46.7K followers, [----] engagements
"The presence of the Y chromosome in a typical fetus will initiate gonadal differentiation into testes. These testes in the male will produce 15-20 times more T than females and over the course of childhood and especially puberty receiving this T will masculinize the muscles bones and tissues in an irreversible way that confers incredible sports advantage. Thus the Y chromosome in and of itself does not confer the male sports performance advantage. Its the downstream consequences of it through development. If you are born with no testes as in the case of Swyer then there is no source for the"
X Link 2023-08-13T14:34Z 43.7K followers, [----] engagements
"WATCH: [--] reasons why biological sex matters 📽"
X Link 2023-08-13T16:16Z 46.7K followers, [----] engagements
"READ: The Ugly Truth of Male Breastfeeding In this detailed piece @shamanspirit13 analyzes the literature on artificially-induced male breastfeeding to see if it is safe and healthy for the infant. Short answer: its not"
X Link 2023-08-14T03:07Z 46.7K followers, 100.4K engagements
"@gjblackshaw @UnrealElHunter Yep Many species of reptile use temperature sex determination. A certain range triggers male dev and another range triggers female dev. Fascinating"
X Link 2023-08-15T14:14Z 46.7K followers, [---] engagements
"@gjblackshaw @UnrealElHunter In turtles: If eggs are incubated below 28C all the turtles hatching from them will be male. Above 31C every egg gives rise to a female. At temperatures in between the broods will give rise to individuals of both sexes"
X Link 2023-08-15T14:16Z 46.7K followers, [---] engagements
"If you are going to read one scientific paper on biological sex read this one. Its the best scientific summary for articulating why sex is binary written in the peer-reviewed journal BioEssays. https://onlinelibrary.wiley.com/doi/10.1002/bies.202200173af=R https://onlinelibrary.wiley.com/doi/10.1002/bies.202200173af=R"
X Link 2023-08-16T02:57Z 47K followers, 88.1K engagements
"So if a male athlete wears a wig and a dress he automatically loses his - 57% more grip strength [--] - 65% more leg strength [--] - 90% more total upper body strength [--] - 162% more punch power 4"
X Link 2023-08-16T03:21Z 46.7K followers, 41.2K engagements
"Biologists discuss how the two sexes originated over [--] billion years ago: Sexual reproduction has its evolutionary origins in the fusion of same-size gametes (isogamy). According to current understanding the size dimorphism between eggs and sperm (anisogamy) that we observe today was driven by competition of germ cells over fertilization.9 13-17 In brief assuming equal resources organisms can either invest in gamete size or gamete number. Large germ cells or egg cells contribute energy resources important cell organelles and genetic material to the formation of the zygote. In contrast the"
X Link 2023-08-16T18:32Z 46.7K followers, [----] engagements
"Atypical development of one trait like genitalia does not call into question the reproductive system a person developed nor does it call into question their sex. Understanding sex development as an evolved sequential and coordinated process with the ultimate end point of developing reproductive anatomy to produce either sperm or eggs is essential for understanding how sex development disorders exist within the binary system of sex"
X Link 2023-08-17T09:15Z 46.7K followers, [----] engagements
"The irony of the sex spectrum is that in the attempt to recognize those with atypical bodies sex spectrum pseudoscientists reinforce narrow boxes onto others by creating rigid definitions of whats accepted as male or female. Every sex spectrum argument ironically creates this outcome: by upholding human-centric scientifically incorrect definitions of male and female (the mix of traits detached from reproductive function) sex spectrum arguments further a rigid socially constructed definition. For example the sex spectrum criteria that a male must have a specific penis length and urethral"
X Link 2023-08-18T15:12Z 46.7K followers, 10.1K engagements
"Gender activists consider hypospadias an "intersex" condition. Hypospadias are the most common genital defect in newborn boys which results in the urethra opening on the underside of the shaft not the tip (the penis was not closed fully). Can you imagine thinking this makes these boys not male"
X Link 2023-08-18T15:21Z 43.7K followers, 192.4K engagements
"The vast difference of resource investment into large gametes (eggs) vs small gametes (sperm) is visually striking in birds. Consider that when you eat eggs the resources you receive from these large gametes would be used in typical circumstances for the developing zygote. Sperm typically provide no resources to the developing zygote and so the main energy investment especially on the gametic level comes from the female. This difference in investment is a source of many sex differences including the differences in male vs female reproductive anatomies and behaviors"
X Link 2023-08-18T15:53Z 46.7K followers, [----] engagements
"Please help find this man's critical thinking skills"
X Link 2023-08-18T17:19Z 43.7K followers, 10.6K engagements
"In the coming weeks I'll be releasing my new book "Binary: Debunking the Sex Spectrum Myth" on Amazon 🥳 You'll be able to buy it in paperback hardcover and eBook formats as well as discover the book at other retailers soon after. I'll announce it here when it's released"
X Link 2023-08-18T18:57Z 46.7K followers, 10.7K engagements
"WATCH: Why Sex Is Binary 📽 Sex is a binary system across the plant and animal kingdoms with exactly two sexes no more and no less. The reason is beautifully simple"
X Link 2023-08-19T06:38Z 46.7K followers, [----] engagements
"Gender-affirming care is about performing cosmetic surgeries on children and adults to align their bodies with their gender identity. Performing surgery on children and adults to help their body systems function normally is not the same thing"
X Link 2023-08-19T14:11Z 46.7K followers, [----] engagements
"There are [--] major reasons why this graphic is wrong. [--]. There are no units on this spectrum to quantify it. [--]. The sheer number of overlapping arrows is evidence that sex cannot be plotted on a spectrum. [--]. There is no objective method to decide where individual DSDs are placed on the spectrum. [--]. Congenital Adrenal Hyperplasia is placed farther to the male end than XX male syndrome implying that XX males (with fully developed penis and testes) are more female than an XX CAH female with ovaries uterus vagina and a slightly masculinized clitoris. [--]. Androgen Insensitivity Syndrome is placed in"
X Link 2023-08-19T21:37Z 43.3K followers, 66.9K engagements
"Can you all please kindly let Kelly know that people are indeed cutting up kids"
X Link 2023-08-20T03:35Z 46.7K followers, [----] engagements
"My new upcoming book Binary is the ultimate guide for debunking the sex spectrum. It tackles [--] common sex spectrum arguments we see on social media and shows how they misrepresent evolution development and genetics"
X Link 2023-08-20T13:59Z 46.7K followers, [----] engagements
"It is often claimed by gender activists that 1.7% of the population are neither male nor female. But 88% of the 1.7% number involves Late Onset CAH which involves unambiguous males or females who are almost always fertile. This drops the number to 0.2%. But even within this percentage almost all DSDs do not cause any sex ambiguity. The fetus still develops a clear phenotype organized around sperm or ova. The cases that result in ambiguity are less than 0.02% of the population and within these cases sex can still be identified by analyzing gonadal tissue and internal genitalia to see what"
X Link 2023-08-22T16:21Z 46.7K followers, 420.6K engagements
"Sex determination is the developmental decision / trigger that decides whether the bipotential gonad differentiates into ovaries or testes. This is determined genetically in humans. Sex differentiation is the development of the genital ducts of either sex organized by the gonad environment and its hormone production or lack thereof. Genetic sex determination has to happen first before the hormone driven genital differentiation. For more see: [--] Eggers S. Sinclair A. (2012). Mammalian sex determination--insights from humans and mice. Chromosome Res 20"
X Link 2023-08-22T19:29Z 46.7K followers, [----] engagements
"By the way I do have my sex development charts which plot the development path of most of the conditions on the graphic. But a written description would still be useful"
X Link 2023-08-23T05:58Z 46.7K followers, 13.7K engagements
"So far gender activists have called me: - A [--] year old gender critical prophet - A trust fund golf boy - A future Ben Shapiro - An architecture student (still) - A Christian pastor - A person who has never heard of intersex - A person who doesnt know what sex reversal is. - A person who is funded by right-wing shadow money. - A person who hires people to edit and produce his animated videos - A grifter who gets tons of money - A transphobe - An intersexphobe - A homophobe - A sexist - A misogynist - A Nazi - A ghoul - A person who has never had sex (I have a newborn). All of these are just"
X Link 2023-08-23T20:37Z 46.7K followers, [----] engagements
"@hansgunning Based on similar types of DSDs we know of probably [--] in [-----] or rarer 💀"
X Link 2023-08-25T00:11Z 46.7K followers, [--] engagements
"@ztraiin Unfortunately I cant access the full article and theres not enough info on the preview for me to comment on it with any accuracy 🤔"
X Link 2023-08-25T00:21Z 46.7K followers, [--] engagements
"@hansgunning The activist brought up the rarity as supposed evidence that my position is contradictory. I was showing him and others that the example he provided simply reinforced the definition of sex. Its also interesting from an academic perspective. So those are the reasons why"
X Link 2023-08-25T01:31Z 47.2K followers, [--] engagements
"Two sexes have existed for over a billion years regardless of what humans thought. You do make a good point that society often viewed women as underdeveloped men which is partially the cause for the myth that we all begin as females in the womb. This is a belief common with gender ideology"
X Link 2023-08-25T16:07Z 46.7K followers, [----] engagements
"My new book on debunking the sex spectrum (Binary) releases in ONE WEEK It will officially be available for order September [--] on Amazon U.S. and internationally I tackle [--] of the most common sex spectrum arguments and dismantle them with detailed biology literature. Ill also be revealing the cover on September [--] and will host a Twitter space to overview the books contents with an exclusive Q&A. More details to come this week"
X Link 2023-08-26T05:22Z 46.7K followers, 15.4K engagements
"@rejserin @St8ingObvious "Not a single citation for any facts." The digital pamphlet text which the QR code links to has [--] in-text citations for every claim. Full bibliography at the end"
X Link 2023-08-27T22:48Z 46.7K followers, [--] engagements
"Two species of rat in Japan have lost their Y chromosome and the SRY gene which is essential for developing the male sex. So how do they still produce males This is a fascinating question considering the males and females are chromosomally identical. In the Amami spiny rat Tokudaia osimensis whose males and females both just have a single X chromosome a small genetic sequence on Chromosome [--] duplicated only in male fetuses tells the SOX9 gene to upregulate itself. This upregulation causes the bipotential gonad to differentiate into testes the first step of male sex determination. In humans"
X Link 2023-08-29T03:06Z 47.1K followers, 18.5K engagements
"Your semi-regular reminder that sex is universally defined by reproduction function and that this woman despite having 95% XY chromosomes developed a female body plan due to her GENETICS able to gestate and give birth. She is not male. This is not a case of a man giving birth. This is a case of an unambiguous female with a genetic disorder giving birth through egg donation"
X Link 2023-08-29T16:59Z 46.7K followers, 18.1K engagements
"Furthermore this case has nothing to do with trans-identified males who wish to give birth. They have a MALE reproductive system and physiology that cannot support a pregnancy. This woman has a FEMALE reproductive system. That is why she was able to support a pregnancy"
X Link 2023-08-29T17:04Z 46.7K followers, [----] engagements
"What sex are babies They dont produce mature gametes. What sex are menopausal women who no longer produce eggs Or a man who was never able to produce sperm The answer to those questions is found in the reproductive system one develops in the womb and how that reproductive system supports the production and release of a gamete type determined by genetics"
X Link 2023-08-29T17:57Z 46.7K followers, [----] engagements
"They are definitely not a woman by the definition because a man who has a uterine transplant still has the body plan determined by genetics that produces sperm. Surgery does not change the function of the phenotype"
X Link 2023-08-29T18:03Z 46.7K followers, [----] engagements
"This is the universal biological definition of male and female. It applies across all anisogamous species and across all time periods"
X Link 2023-08-29T18:22Z 47.1K followers, 20.8K engagements
"I wonder why despite having 95% XY chromosomes she developed as a female Could it be due to the genes within the chromosomes that are missing Like SRY This is the point of mentioning genetics. In disorders like this looking at chromosomes alone wont tell you the full story. You have to zoom in more"
X Link 2023-08-29T18:46Z 46.7K followers, [----] engagements
"Those are isogamous organisms with no sex. They have mating types not sexes. Sexes are defined by a difference in gamete size and therefore a difference in resource contribution in reproduction. While isogamous species use mating types and engage in sexual reproduction they cannot be said to have a sex. Gamete compatibility in these systems is regulated by molecular markers"
X Link 2023-08-29T18:56Z 47.1K followers, [---] engagements
"Why are gametes so important Heres the brief summary. In biology systems are defined by their structure and function. Certain structures have certain functions like our hearts or eyes. Same concept applies to sexes male and female which also have a structure (this can be diverse across species) and a function (this is universal across species). The universal function of the male and female sexes is the production of gametes of differing size and form. Sperm for the male eggs for the female. Our reproductive systems have evolved to support one of these two gamete types and there are a host of"
X Link 2023-08-29T19:47Z 46.7K followers, [----] engagements
"Activists claim that sex is bimodal. Here is an example of a bimodal graph a continuous set of data with two modes. This one is height. One distribution represents females the other represents males. Are people in the middle intersex This would be absurd but it is the logical application of the claim that sex itself is bimodal. No traits that vary by sex like height weight hormone levels are often bimodal but only because there are two sexes each with an average distribution of variation in a given trait. Overlap between the two distributions shows where males and females share a common set"
X Link 2023-08-29T23:33Z 46.7K followers, [----] engagements
"The lengths people will go to deny the ancient reality of male and female. It is one of the most fundamental aspects of biology. If youre willing to believe they are constructed by society and that you can transcend them what else are you willing to believe"
X Link 2023-08-30T14:36Z 46.7K followers, 37.1K engagements
"WATCH: The Male Advantage in Sports 📽 Detailed analysis of the scientific data on why testosterone suppression does not eliminate the male performance advantage in sports. Sources and transcript:"
X Link 2023-08-30T16:00Z 46.7K followers, 188.4K engagements
"The biologists writing this understand that the definition of sexes is the universal one in biology because it is the only one that applies across all anisogamous species and all time periods. They say that the definition of sex and sexes are used in different ways because they understand there are different contexts in which they are used like in social cultural or medical contexts. For example the word sex is often used as the verb for sexual intercourse and they want to be clear that there are other contexts for its use. But when it comes to sexes they make clear in their paper that the"
X Link 2023-08-30T17:42Z 46.7K followers, [----] engagements
"My new book releases for order Sept [--] I tackle [--] common sex spectrum arguments where I will walk you through how to understand their strategies and how to expertly combat them with evolutionary and developmental biology"
X Link 2023-08-30T18:53Z 46.7K followers, [----] engagements
"READ: Ethics Science and History of Uterine Transplants in Males Since the first uterine transplant in the US doctors have been theorizing if a uterus transplant could be possible for a transwoman. Case studies say otherwise. @shamanspirit13 https://www.theparadoxinstitute.com/read/ethics-science-and-history-of-uterine-transplants-in-males https://www.theparadoxinstitute.com/read/ethics-science-and-history-of-uterine-transplants-in-males"
X Link 2023-08-30T19:19Z 47.1K followers, [----] engagements
"Everyone produces testosterone and estrogen. Yes but those with testes (males) produce 15-20x more T than females and this immense amount of T masculinizes the body across development providing the male with a massive musculoskeletal and physiological advantage. Caster Semenya who is XY has 5-ARD a male DSD. Those with it have normal testes that produce male typical levels of T with normal reception of T from those testes masculinizing the body. Their bodies just cannot convert that T into DHT which is the hormone responsible for the final step of differentiation of the males external"
X Link 2023-08-30T22:43Z 46.7K followers, [----] engagements
"I've always understood that the sexes are defined by the differences in their reproductive role: males provide the sperm females provide the egg. This applies across the plant and animal kingdoms. And I learned it in middle school"
X Link 2023-08-31T00:13Z 46.7K followers, [----] engagements
"A knowledgeable biologist or mycologist would know that isogamous fungi have whats called mating types where gametes are the same size (no sperm and no egg) and there can be tens of thousands of them each one with a unique molecular compatibility marker but they are not sexes. Sexes are defined by a difference in gamete size (sperm and egg also known as anisogamy). There are no sexes in isogamous mating types. Latest science tells us there are over [-----] sexes assuming humans are mushrooms 🍄 https://t.co/zP6QfkQsyg Latest science tells us there are over [-----] sexes assuming humans are"
X Link 2023-08-31T01:21Z 47.1K followers, 33.1K engagements
"I'm not a biologist though I understand the biology of sex and sex differences near a PhD level. I've read the detailed primary literature on it studied it extensively for seven years written three books on it totaling [------] words produced more than twenty animated videos on various biology of sex topics and written many educational articles"
X Link 2023-08-31T04:59Z 46.7K followers, [--] engagements
"Always ask what units they are using to plot this bimodal spectrum. Certain traits can be plotted as a continuous variable. The axis could be testosterone levels or weight but when it comes to karyotype gonad type or Wolffian vs Mullerian duct structures there is no intrinsic order for them. How do you order XX XY XXY and XXYY for example They are discrete and cannot be plotted on a spectrum. Now imagine taking all of these traits and plotting them together in one spectral smoothie. The units wont be consistent so you cant even combine the data and theres no objective method for ordering all"
X Link 2023-08-31T13:43Z 46.7K followers, [----] engagements
"Here are some common motivation-based ad hominem responses by gender activists. These are fallacious responses used to discredit a scientific claim on the basis of hidden motivations despite having no evidence for them: You do this for money (grifter) Youre religious Youre bigoted Youre transphobic Youre secretly paid by a think tank You have trauma in your past You want to hurt the oppressed You hate bodily autonomy Youre a Republican Youre a Trump supporter You want to control others Youre paranoid"
X Link 2023-08-31T20:53Z 46.7K followers, [----] engagements
"Keith Olbermann does not understand the science of athletic performance between males and females but neither does he care too. Instead hes an angry shell of a man who decides to crap on one of the most accomplished female swimmers on behalf of men wanting to be women. @Riley_Gaines_ Can you just address the reality and move past it You sucked at swimming. That's why you lost. @Riley_Gaines_ Can you just address the reality and move past it You sucked at swimming. That's why you lost"
X Link 2023-09-01T02:25Z 47.1K followers, 29K engagements
"Do you not understand the science of the male performance advantage The strength difference between male and female bodies is vast. On average males have: - 57% more grip strength [--] - 65% more leg strength [--] - 90% more total upper body strength [--] - 162% more punch power [--] To put these numbers in comparison males are only 7% taller than females yet on the population level we easily see the considerable height differences between them.5 Percentages like 50-160% are therefore immense and have considerably less overlap between the sexes. The musculoskeletal differences between equally trained"
X Link 2023-09-01T02:28Z 47.1K followers, 81.9K engagements
"READ: Medicalization of Gender Non-Conformance A detailed look at how gender non-conforming kids are being pushed into gender identity medicalization. https://www.theparadoxinstitute.com/read/medicalization-of-gender-non-conformance https://www.theparadoxinstitute.com/read/medicalization-of-gender-non-conformance"
X Link 2023-09-01T12:01Z 47.1K followers, [----] engagements
"READ: There Is No Trans Genocide Gender activists often claim that genocide is being committed against the trans community via anti-trans laws. An analysis of the evidence shows an ugly truth but not in the way one would expect. @shamanspirit13"
X Link 2023-09-02T12:00Z 46.7K followers, 15.7K engagements
"I present my new book on debunking the sex spectrum Order now on Amazon I tackle [--] common sex spectrum arguments and teach the reader how to respond with detailed knowledge from evolutionary and developmental biology literature. https://www.amazon.com/Binary-Debunking-Sex-Spectrum-Myth/dp/B0CFZL3HXN/ https://www.amazon.com/Binary-Debunking-Sex-Spectrum-Myth/dp/B0CFZL3HXN/"
X Link 2023-09-02T15:07Z 47K followers, 327.4K engagements
"The book is now the number #1 new release in biology 🥳 Order it on your local Amazon website"
X Link 2023-09-03T02:41Z [--] followers, [----] engagements
""Biologists consider the evolution of the two sexes mathematically inevitable because it maximizes the efficiency of sexual reproduction providing resources to the offspring through investment in large nutrient heavy eggs while also maximizing gamete fusion through the production of many sperm that are not as resource intensive and yet can quickly search for and find the egg. This efficiency is why it has evolved independently so many times." Order now on Amazon:"
X Link 2023-09-03T19:20Z 46.7K followers, [----] engagements
"The four principles of the sex binary. Those who wish to deny these are denying foundational truths in evolution development and genetics"
X Link 2023-09-03T23:52Z 46.7K followers, 11.2K engagements
"This is the universal definition of sexes. The reason why it is universal is because it applies to every single species with male-female sexual systems. Its the fundamental difference between the sexes. This is almost every plant species and all animal species"
X Link 2023-09-04T02:18Z 47.1K followers, 13K engagements
"Chromosomes hold the genetic instructions for sex development. It does not matter how many sex chromosomes you add or take away youll always either get a male or female. The genetic sex determination system in mammals is binary"
X Link 2023-09-04T03:46Z 46.7K followers, [----] engagements
"Why can't a male develop identical breasts to a female since breast tissue growth is sensitive to high estrogen exposure in both sexes This has to do with what's called the hypothalamic-pituitary-gonadal axis or HPG. This axis forms an important brain-to-gonad feedback loop at puberty that causes the masculinization or feminization of the body depending on the gonad type you have. Many of the effects will be permanent (so called organizational effects). For females the HPG axis is specifically the HPO axis (O for ovarian). At puberty the cyclical production of estrogen from the ovaries and"
X Link 2023-09-04T06:49Z 46.7K followers, 512.2K engagements
"This is known as a postmodern language game. They believe that if they redefine words they will achieve liberation from oppressive societal constructs"
X Link 2023-09-04T15:55Z 46.7K followers, 28.5K engagements
"How the sex spectrum uses a veneer of science: "The scientific language is simply a veneer for the social and political arguments hiding behind it. Evolutionary biologist @BretWeinstein calls this strategy idea laundering: portraying ones moral impulses prejudices and opinions as objective scientific knowledge. Similar to a money laundering operation which uses a legitimate business to hide the illegal activity underneath idea laundering uses scientific language and credentials as a cover to sneak in sociopolitical agendas under the more legitimate veneer of science." Excerpt from my new book"
X Link 2023-09-04T16:18Z 46.7K followers, [----] engagements
"He first says that being a woman is about sex / biology. Then says he thinks theyre adult girls Weird choice of words. And ends with transwomen can be women as well. Im confused. Sadiq Khan tells Piers Morgan what he thinks a woman is 👇 @MayorofLondon @SadiqKhan @piersmorgan #PMU https://t.co/l4pzj1cavo Sadiq Khan tells Piers Morgan what he thinks a woman is 👇 @MayorofLondon @SadiqKhan @piersmorgan #PMU https://t.co/l4pzj1cavo"
X Link 2023-09-04T23:01Z 47.2K followers, [----] engagements
"Why gamete production does not define sex is like saying why sight production does not define eyes. Function is the defining feature of biological systems the thing that differentiates between whether were looking at a heart an eye or a leg. And function also unites similar systems despite them looking very different. Eyes have very diverse structures across species yet they are all defined the same: by the function of sight production"
X Link 2023-09-04T23:50Z 46.7K followers, 10.7K engagements
"The word youre looking for is female"
X Link 2023-09-05T04:49Z 46.7K followers, [----] engagements
"The sex spectrum is one of the most popular forms of evolution denial that weve seen in recent times. It claims that the sexes are constructed by society and that there exists a continuum of options in between them. To believe this youd have to deny many things from how we reproduce as a species to sexual selection development and genetics"
X Link 2023-09-05T18:11Z 46.7K followers, 115.1K engagements
"Biologists and mycologists understand that those thousands of sexes are actually mating types in isogamous systems not sexes. Sexes are defined by a difference in gamete size whereas mating types are defined by incompatibilities between phenotypically similar gametes / partners (isogamy). Gametes in such systems are the same size and thus there are no sexes. There can be thousands of mating types but only two sexes. See Perrin N. (2011). What uses are mating types for more on that important distinction"
X Link 2023-09-05T18:22Z 46.7K followers, [----] engagements
"@VivekGRamaswamy There are two sexes because there are only two roles in reproduction: the sex that provides the sperm and the sex that provides the egg"
X Link 2023-09-05T20:55Z 46.7K followers, 24K engagements
"What does this cover design mean And what's the story behind its creation The illustration is a binary star system rising above a sand-like landscape reminiscent of Frank Herbert's sci-fi epic Dune. Yet this visual also hints at the universal difference in gamete size that defines the sexes across the vast array of plant and animal life. We wanted something monolithic for the binary interacting with and pushing away the amorphous spectrum. We also wanted a visual that was timeless and abstract something that hinted at our evolutionary origins since the divergence of gametes into two extreme"
X Link 2023-09-05T22:08Z 42.7K followers, [----] engagements
"1.2 billion years of male-female reproduction having evolved independently across nearly all lineages of multicellular species is far from pseudoscientific religious dogma. @zaelefty @VivekGRamaswamy Piffle. Pure pseudoscience based on Christian (and only Christian) religious dogma. @zaelefty @VivekGRamaswamy Piffle. Pure pseudoscience based on Christian (and only Christian) religious dogma"
X Link 2023-09-05T23:12Z 47.2K followers, [----] engagements
"Can you be physically a human but mentally a cat"
X Link 2023-09-05T23:19Z 46.7K followers, [----] engagements
"Binary sex was invented by Nature circa [---] billion years BC"
X Link 2023-09-05T23:41Z 46.7K followers, 19.5K engagements
"Ive written [--] books on variation. Variation is a cornerstone of biology but this has to be understood within the correct evolutionary and developmental framework. Sex-based variation occurs within each of the two sexes not outside of them. @zaelefty Variation is in fact a REQUIREMENT of evolution dumbass. Your rigid ideological sex binary is indeed born of society. In nature animals come in all kinds of different shapes and sizes. It's you who is trying (and failing) to fit them into [--] rigid categories. @zaelefty Variation is in fact a REQUIREMENT of evolution dumbass. Your rigid ideological"
X Link 2023-09-06T01:39Z 47.1K followers, [----] engagements
"Im talking about the origin of anisogamy the divergence of gametes into two differences sizes which is the first step towards sexual dimorphism and the origin of the two sexes"
X Link 2023-09-06T01:44Z 46.7K followers, [----] engagements
"Hermaphrodites are examples of the male and female sexes composed in the same individual. Two sexes in one. They are not an example of another sex. @zaelefty @VivekGRamaswamy https://t.co/RkKj4LhMnf @zaelefty @VivekGRamaswamy https://t.co/RkKj4LhMnf"
X Link 2023-09-06T04:28Z 47.1K followers, [----] engagements
"@tearsoftechno @VivekGRamaswamy We're talking about sex"
X Link 2023-09-06T04:58Z 46.7K followers, [---] engagements
"Since gender activists are now using bees to disprove the sex binary will I now need to make a long post about how and why bees only have two sexes and how their sex determination system works 🧐"
X Link 2023-09-06T15:10Z 47K followers, 44.7K engagements
"I love writing about and teaching biology. Im continually learning so much with you all as well"
X Link 2023-09-06T21:46Z 46.7K followers, [----] engagements
"This is called quantum flapdoodlethe misapplication of quantum physics to try and validate unrelated topics"
X Link 2023-09-06T22:05Z 46.7K followers, 12.3K engagements
"Citation please"
X Link 2023-09-07T15:00Z 46.7K followers, 27.8K engagements
"Plants produce sperm and eggs. Male plants produce sperm cells inside gametophytes called pollen which land on another plant with female parts grow long tubes into the ovule where the egg is housed and shoot the sperm cells inside to fertilize the egg"
X Link 2023-09-07T15:38Z 47.1K followers, [----] engagements
"Amazing how many people in this thread dont know how anisogamous plants and animals work"
X Link 2023-09-07T18:40Z 46.7K followers, [----] engagements
"Gender activists think its a self-own for us to correctly state that almost all plant species produce sperm. When they think of sperm they think of mammalian sperm because to them everything is about appearancewhat things look like. They dont care about evolved function"
X Link 2023-09-07T18:43Z 47.1K followers, [----] engagements
"Readers are assuming that this is an embryo but it's not. The structures they created were formed with stem cells that were "coaxed" with chemicals to get them to activate certain programmed functions. The various functions that were activated each have a role in the formation of the foundational cellular structures that make up an early embryo. The cells were given signals to do a specific function and they arranged themselves together into those specific structures. The fail rate for this phenomenon was reported as 99% with only 1% being successful in assembling themselves. On top of this"
X Link 2023-09-07T20:06Z 46.7K followers, [----] engagements
"@mistiepix An entire book reinforced by the existence of bees. https://x.com/zaelefty/status/1699894438367994148s=20 https://x.com/zaelefty/status/1699894438367994148s=20"
X Link 2023-09-07T21:21Z 47.1K followers, [----] engagements
"I'll tell you. XXY: - Differentiation of gonads into testes - Production of AMH and T - Male internal and external genitalia - Unambiguous male X: - Differentiation of gonads into ovaries - Lack of second X results in primary ovarian failure - Lack of AMH and T - Female internal and external genitalia - Unambiguous female XXX: - Differentiation of gonads into ovaries - Lack of AMH and T - Female internal and external genitalia - Unambiguous female"
X Link 2023-09-08T00:04Z 46.7K followers, 12.8K engagements
"Guys and gals. Most plants produce sperm and eggs just as animals produce sperm and eggs. It's just that they look different but they still have the same function. The male part of a plant produces pollen which produce the sperm. The female part of a plant produces ovules which produce the eggs. When a pollen grain loves a female plant very much it lands on the plant grows long tubes down to the ovule where the egg is housed and shoots sperm cells into it fertilizing the egg"
X Link 2023-09-08T01:45Z 46.7K followers, [----] engagements
"Plants only have male and female sexes whether they are composed in the same flower on the same plant (perfect flowers) in separate flowers on the same plant (monoecious) or in separate plants altogether (dioecious). These are all examples of binarytwosexes"
X Link 2023-09-08T02:03Z 46.7K followers, [----] engagements
"Notice the sperm and egg cells in this diagram Also notice that we are looking at plants not animals. Be sure to tell the gender activists who think no plant produces sperm and eggs. In reality almost every plant species does 🤓"
X Link 2023-09-08T02:20Z 46.7K followers, [----] engagements
"Gender researchers have discovered two new gamete types hybrids between sperm and egg known as spergs and speggs 👨🔬 The discovery paper has been published in the journal of Spectrum Mechanics. A detailed diagram below shows the form of these new gamete types 🥸"
X Link 2023-09-08T13:59Z 46.7K followers, 118.4K engagements
"Yes many are and they all reproduce through sperm and egg. This is what the binary means. It does not require that all species have male and female sexes separated into two distinct individuals. It just requires that there are only two sexes. most plants are literally hermaphrodites most plants are literally hermaphrodites"
X Link 2023-09-08T17:29Z 47.1K followers, [----] engagements
"@Irreversib42456 Monoecious is technically male and female flowers on the same plant but separated into different flowers (Male vs female flowers on same plant). Hermaphrodite or perfect flowers are individuals flowers that are male AND female on the same plant"
X Link 2023-09-08T18:02Z 46.7K followers, [--] engagements
"The systems you described still involve the fusion of male and female gametes you chucklenuggets. @LactivistSinger while the basic system of reproduction in lots of plants involves the fusion of male and female gametes some individual plants do not neatly fit into binaries. For example in some species there are no separate female and male plants (they are hermaphroditic). Flowers can 2/3 @LactivistSinger while the basic system of reproduction in lots of plants involves the fusion of male and female gametes some individual plants do not neatly fit into binaries. For example in some species"
X Link 2023-09-08T20:27Z 47.2K followers, [----] engagements
"The idea that you can be born in the wrong body posits a soul / body dualism along with an "is / ought" fallacy that claims to know what should be from what is. It's a metaphysical claim and it does harm to those you are telling have been born in the wrong body"
X Link 2023-09-09T01:49Z 46.7K followers, 19.2K engagements
"READ: There Is No Trans Genocide Gender activists often claim that genocide is being committed against the trans community via anti-trans laws. An analysis of the evidence shows an ugly truth but not in the way one would expect. @shamanspirit13"
X Link 2023-09-09T12:00Z 46.7K followers, 13.3K engagements
"WATCH: Why Sex Is Binary 📽"
X Link 2023-09-09T16:55Z 46.7K followers, [----] engagements
"Understanding the evolutionary and developmental biology of male and female and the important differences between them in humans and across the vast diversity of life is not misogyny nor patriarchal. Its exactly the opposite"
X Link 2023-09-10T16:26Z 47K followers, [----] engagements
"PCOS is not an "intersex" condition by any definition of the word. PCOS is polycystic ovarian syndrome and it results in unusual levels of androgen production in typical females. "Intersex" is a misnomer umbrella term for conditions that result in sex ambiguity or a mismatch between chromosomes and phenotype. Women with PCOS have no such qualities. They are unambiguous females with typical reproductive systems"
X Link 2023-09-10T19:32Z 46.7K followers, 159.3K engagements
"Thank you for the summon. PCOS is not an "intersex" condition. PCOS is polycystic ovarian syndrome and it results in unusual levels of androgen production in typical females. "Intersex" is a misnomer umbrella term for conditions that result in sex ambiguity or a mismatch between chromosomes and phenotype. Women with PCOS have no such qualities. They are unambiguous females with typical reproductive systems"
X Link 2023-09-10T19:32Z 46.7K followers, [----] engagements
"Generation of two sexes (male and female) is an essential and universal phenomenon among animals to reproduce and maintain their existence. From a [----] peer-reviewed paper in the journal Scientific Reports by Nature"
X Link 2023-09-10T21:03Z 46.7K followers, [----] engagements
"READ: The Ugly Truth of Male Breastfeeding In this detailed piece @shamanspirit13 analyzes the literature on artificially-induced male breastfeeding to see if it is safe and healthy for the infant. Short answer: it's not"
X Link 2023-09-11T13:00Z 46.7K followers, 13.6K engagements
"Sex is not for reproduction. Thats the fundamental evolved function. This is like saying eyes are not for sight. @zaelefty The absence of an intersex gamete does not mean that there is no intersex sex. Because sex is not for reproduction. If sex were for reproduction all endosex individuals would reproduce. Gender is for being known and recognized. @zaelefty The absence of an intersex gamete does not mean that there is no intersex sex. Because sex is not for reproduction. If sex were for reproduction all endosex individuals would reproduce. Gender is for being known and recognized"
X Link 2023-09-12T12:39Z 47K followers, 19.7K engagements
"It is a mistake to believe that by taking down one head of gender ideology you will achieve success. You must strike at the foundation the heart of the hydra the fiction upon which the rest depends. Article by @PTElephant"
X Link 2023-09-13T12:00Z 46.7K followers, [----] engagements
"READ: Ethics Science and History of Uterine Transplants in Males Since the first uterine transplant in the US doctors have been theorizing if a uterus transplant could be possible for a transwoman. Case studies say otherwise. @shamanspirit13"
X Link 2023-09-13T19:19Z 46.7K followers, [----] engagements
"Yes males have these genes just like females. All three of these genes are located on the autosomes. In the male embryo the SRY genetic pathway blocks them from upregulating for ovarian development and testes development occurs instead"
X Link 2023-09-14T00:03Z 42.8K followers, [----] engagements
"READ: The "brain sex hypothesis" posits that gender dysphoria is rooted in having a brain that aligns with a different sex. In part [--] of this new multi-part series @NeuroSGS begins with an analysis of the BSTc"
X Link 2023-09-14T15:01Z 46.7K followers, [----] engagements
"When people use the term "intersex" they are often describing all disorders that impact the development of the reproductive system. These disorders impact males or females. And it's this sex-specific knowledge that allows us to treat them accurately. For example you would call a woman with Turner Syndrome (45:X) "intersex." But she develops an unambiguous female reproductive system. It's just that her ovaries are underdeveloped resulting in hormone deficiencies. Her single X chromosome results in heart defects and other physical abnormalities. Her only chance for fertility is through the"
X Link 2023-09-14T23:58Z 47.1K followers, 526.9K engagements
"READ: There Is No Trans Genocide Gender activists often claim that genocide is being committed against the trans community via anti-trans laws. An analysis of the evidence shows an ugly truth but not in the way one would expect. @shamanspirit13"
X Link 2023-09-16T12:00Z 46.7K followers, [---] engagements
"I get my information straight from peer-reviewed research"
X Link 2023-09-16T18:26Z 46.7K followers, [----] engagements
""Sex itself of course doesn't actually exist.""
X Link 2023-09-17T02:52Z 46.7K followers, [----] engagements
"There are a fascinating number of mechanisms nature has evolved to produce males and females across different species. XX/XY XX/XO ZZ/ZW Temperature Ratio of sex chromosomes to autosomes Gene dosage Haploid/diploid And many more. And yet with all these different mechanisms there is always a consistent outcome of male or female individuals. Incredible isn't it"
X Link 2023-09-17T03:11Z 46.7K followers, 13.8K engagements
"What would you call permanent infertility Hormonal deficiencies Genital abnormalities Life threatening heart defects These are disorders. Were not calling people disordered. Were correctly calling the conditions themselves disorders"
X Link 2023-09-17T15:22Z 46.7K followers, [----] engagements
"The idea that sex exists on a continuum between male and female that male and female cannot be reliably defined and that one's internal sense of self determines sex--this is the sex spectrum. It is indeed one of the most popular cultural myths ever spread"
X Link 2023-09-17T22:32Z 46.7K followers, [----] engagements
"READ: The Ugly Truth of Male Breastfeeding In this detailed piece @shamanspirit13 analyzes the literature on artificially-induced male breastfeeding to see if it is safe and healthy for the infant. Short answer: it's not"
X Link 2023-09-18T13:00Z 46.7K followers, [----] engagements
"Imagine responding this way about other types of disorders. Explain blind people. Explain Down syndrome people. How about you leave people with congenital disorders alone. They dont exist to validate your crazy ideas about reality"
X Link 2023-09-18T17:11Z 46.7K followers, 53.1K engagements
"Most disorders that impact the reproductive system result in infertility and other severe physiological issues many of which require lifelong medical treatment. Some specific disorders can result in additional cognitive and physical handicaps"
X Link 2023-09-18T22:54Z 46.7K followers, [----] engagements
"And yet delusional males think they can do this too"
X Link 2023-09-19T12:47Z 46.7K followers, 10.6K engagements
"During puberty the reception of high levels of testosterone through the hypothalamic-pituitary-gonadal axis is critical for males. Block this axis as puberty blockers do and you'll end up with a host of physical and cognitive issues. Researchers have tested the effects of"
X Link 2023-09-19T14:20Z 46.7K followers, [----] engagements
"Male puberty happens because the hypothalamus tells the pituitary to produce luteinizing hormone (LH) and follicular stimulating hormone (FSH) which tells the testes to produce more testosterone. This creates a feedback loop between the hypothalamus the pituitary and the gonad known as the HPG axis. Through puberty the male will reach circulating T levels 15-20x higher than his female counterpart and through this activation of the HPG axis his already organized reproductive structures and overall body physiology (whose structures were setup in utero) will masculinize in irreversible ways."
X Link 2023-09-19T14:50Z 47K followers, 129K engagements
"Transgender people do not have a mismatch of chromosomes and phenotype or ambiguous sex characteristics. They are born as typical healthy males or females with no reproductive disorder"
X Link 2023-09-20T03:28Z 43.7K followers, 58K engagements
"Intersex people do not challenge the sex binary. See below: When people use the term "intersex" they are often describing all disorders that impact the development of the reproductive system. These disorders impact males or females. And it's this sex-specific knowledge that allows us to treat them accurately. For example you would call a woman with Turner Syndrome (45:X) "intersex." But she develops an unambiguous female reproductive system. It's just that her ovaries are underdeveloped resulting in hormone deficiencies. Her single X chromosome results in heart defects and other physical"
X Link 2023-09-20T05:33Z 43.7K followers, 12.3K engagements
"It is a mistake to believe that by taking down one head of gender ideology you will achieve success. You must strike at the foundation the heart of the hydra the fiction upon which the rest depends. Article by @PTElephant"
X Link 2023-09-20T12:00Z 46.7K followers, [----] engagements
"Males and females both produce testosterone and estrogen but they are produced in far different amounts and serve sex-specific purposes. For example males produce 15-20x more testosterone than females and have sex-specific roles for the hormone in their body tissues and physiology"
X Link 2023-09-20T14:04Z 46.7K followers, 26.7K engagements
"What are the effects of blocking puberty in females Pubertal development in females requires the reception of sex hormones through the hypothalamic-pituitary-gonadal axis. Block this axis as puberty blockers do and you'll end up with a host of physical and cognitive issues. Researchers have tested the effects of blocking this axis in female mice. For example when puberty suppressors are given to female mice there is reduced bone mass acquisition and bone strength; increased risk of obesity; decreased uterine and ovarian weights; completely absent follicle maturation (no mature eggs produced);"
X Link 2023-09-20T15:54Z 46.7K followers, [----] engagements
"There is plenty of published research on whether males have physical advantages over females starting from the present day and going back [--] years. Veronica Ivy is just lying when he says that there is not"
X Link 2023-09-21T18:39Z 46.7K followers, [----] engagements
"There's [--] lies that trans-identified male Veronica Ivy utilizes in this clip about biological sex and sport. Let's break it down. [--]. "Policing whether transgender women and intersex women are really female is built in racism." While there has been historical racism against black females the recent push to ban specific intersex athletes from female sports is not due to racism but because they are males with sex development disorders. A common example is Caster Semenya a black male Olympic athlete with 5-alpha reductase deficiency who competes in the female category. Due to a deficiency in the"
X Link 2023-09-21T20:02Z 42.8K followers, 1.2M engagements
"There's [--] lies that trans-identified male Veronica Ivy utilizes in this clip about biological sex and sport. Let's break it down. [--]. "Policing whether transgender women and intersex women are really female is built in racism." While there has been historical racism against black females the recent push to ban specific intersex athletes from female sports is not due to racism but because they are males with sex development disorders. A common example is Caster Semenya a black male Olympic athlete with 5-alpha reductase deficiency who competes in the female category. Due to a deficiency in the"
X Link 2023-09-21T20:07Z 46.7K followers, [----] engagements
"There's [--] lies that trans-identified male Veronica Ivy utilizes in this clip about biological sex and sport. Let's break it down. [--]. "Policing whether transgender women and intersex women are really female is built in racism." While there has been historical racism against black females the recent push to ban specific intersex athletes from female sports is not due to racism but because they are males with sex development disorders. A common example is Caster Semenya a black male Olympic athlete with 5-alpha reductase deficiency who competes in the female category. Due to a deficiency in the"
X Link 2023-09-22T03:59Z 46.7K followers, [---] engagements
"There's [--] lies that trans-identified male Veronica Ivy utilizes in this clip about biological sex and sport. Let's break it down. [--]. "Policing whether transgender women and intersex women are really female is built in racism." While there has been historical racism against black females the recent push to ban specific intersex athletes from female sports is not due to racism but because they are males with sex development disorders. A common example is Caster Semenya a black male Olympic athlete with 5-alpha reductase deficiency who competes in the female category. Due to a deficiency in the"
X Link 2023-09-22T03:59Z 46.7K followers, [----] engagements
"Neil DeGrasse Tyson (@neiltyson) is misinformed and willfully ignorant on this topic. He claims that Semenya is a genetic female with naturally high testosterone. But this is false. Not only does Semenya have XY chromosomes but also has "make-male" genes like SRY which differentiated the gonads into normal testes. These testes produce male-typical levels of testosterone (15-20x higher than a female) that the body then receives across development masculinizing the physiology. This provides the male advantage for Semenya. Semenya has 5-alpha reductase deficiency which causes a deficiency in a"
X Link 2023-09-22T23:51Z [--] followers, 25K engagements
"Neil DeGrasse Tyson (@neiltyson) is misinformed and willfully ignorant on this topic. He claims that Semenya is a genetic female with naturally high testosterone. But this is false. Not only does Semenya have XY chromosomes but also has "make-male" genes like SRY which differentiated the gonads into normal testes. These testes produce male-typical levels of testosterone (15-20x higher than a female) that the body then receives across development masculinizing the physiology.1 This provides the male advantage.2 Semenya has 5-alpha reductase deficiency which causes a deficiency in a hormone"
X Link 2023-09-22T23:56Z 46.7K followers, [----] engagements
"READ: There Is No Trans Genocide Gender activists often claim that genocide is being committed against the trans community via anti-trans laws. An analysis of the evidence shows an ugly truth but not in the way one would expect. @shamanspirit13"
X Link 2023-09-23T12:00Z 46.7K followers, [----] engagements
"What exactly is backed up by science [--]. The idea that you can change sex This would require the differentiation of the gonads into the opposite sex along with the reproductive anatomy to support it. This only happens in species who have evolved sequential hermaphroditism like we see in many fish.1 But humans are not fish. We are gonochoric meaning individuals are either male or female through their entire life cycle.2 [--]. The idea that trans people have brains that match their identity Studies of trans individuals which show sex differences in the brain that seem to resemble the opposite sex"
X Link 2023-09-23T22:13Z 47.1K followers, 79K engagements
"The way the sex of an embryo is chosen for IVF is through the sex chromosomes XX or XY. The sex chromosomes will predict sex at 100% accuracy as long as everything goes according to plan and there are no gene errors in the genetic profile of the embryo. A gene error could be something like a translocation of the SRY gene from the Y to an XX zygote resulting in a male with XX chromosomes no Y. But this is very rare. In typical reproduction it occurs in [--] in [-----] male fetuses"
X Link 2023-09-24T21:08Z 47.1K followers, [----] engagements
"Transwomen do not have a physical advantage over cis women." This is false. Heres why. There has been decades of research on the immense physical advantages males have over females and transwomen are almost always typical males with no sex development disorder. The strength difference between male and female bodies is vast. Equally trained males have 57% more grip strength1 65% more leg strength2 90% more total upper body strength3 and 162% more punch power.4 To put these numbers in comparison males are only 7% taller than females yet on the population level we easily see the considerable"
X Link 2023-09-26T22:02Z 46.7K followers, 345.2K engagements
"This is completely false. Heres why. There has been decades of research on the immense physical advantages males have over females and transwomen are almost always typical males with no sex development disorder. The strength difference between male and female bodies is vast. Equally trained males have 57% more grip strength1 65% more leg strength2 90% more total upper body strength3 and 162% more punch power.4 To put these numbers in comparison males are only 7% taller than females yet on the population level we easily see the considerable height differences between them.5 Percentages like"
X Link 2023-09-26T23:55Z 46.7K followers, 111.2K engagements
"It is a mistake to believe that by taking down one head of gender ideology you will achieve success. You must strike at the foundation the heart of the hydra the fiction upon which the rest depends. Article by @PTElephant"
X Link 2023-09-27T12:00Z 46.7K followers, [----] engagements
"The best way to learn something Teach it. [--]. Research the desired topic. [--]. Try to teach it to someone. [--]. Fill in the holes in your knowledge [--]. Review what you learned and make your teaching easier to understand. Repeat steps 2-4 as needed. This is known as the Feynman"
X Link 2023-09-28T04:48Z 46.7K followers, [---] engagements
"We do not all begin with female anatomy. It's unfortunate this is getting so much attention. Let's break down each of the falsehoods. [--]. "In the womb up to a certain point our anatomy is female." Every fetus begins with both a Mullerian and Wolffian duct structure. The Mullerian structure will become the female genital system. The Wolffian structure will become the male's. Therefore in the beginning the fetus's genitalia is undifferentiated. However undifferentiated is not the same as female anatomy. Undifferentiated means the genital ducts exist in a state that is neither male nor female."
X Link 2023-09-28T19:12Z 46.7K followers, 13.4K engagements
"It is good this paper recognizes that sex plays a fundamental role in sports performance advantage but they make one glaring error in their mention of intersex. They claim that intersex makes up 2% of the population. The clinical usage of intersex refers to conditions that result in a mismatch of chromosomes and phenotype or ambiguous sex markers. These are extremely rare around 0.018% not 2%. The 2% figure is an even more inflated figure from Anne Fausto-Sterlings 1.7% which includes a host of reproductive disorders that result in no ambiguity whatsoever. The other error they make is"
X Link 2023-09-29T15:40Z 46.7K followers, 175.5K engagements
"I received a review of Binary saying it is "Unfactual and gossipy garbage." Considering the book sources its info straight from hundreds of evidence-based scientific papers and utilizes hundreds of in-text citations it is very much based in fact 🤓"
X Link 2023-10-01T18:37Z 46.7K followers, 26.6K engagements
"People have asked me how to evaluate the accuracy of scientific papers. I will discuss more on this later but for now here are some good [--] steps to utilize (from the website The Logic of Science). [--]. Read the original study yourself [--]. Dont rely on titles and abstracts [--]. Acquire the necessary background knowledge [--]. Make sure that the paper is published in a legitimate journal [--]. Check the authors for relevant expertise and conflicts of interest [--]. See if the journals impact factor matches the papers claims [--]. Make sure that the study was designed conducted and analyzed correctly [--]. See if"
X Link 2023-10-01T19:29Z 46.7K followers, 13.1K engagements
"The gender critical "myth" that sex is binary and immutable in humans is not a myth but an evolutionary fact. What "myth" did you debunk in this piece Do you mean the fact that there are only two sexes across the vast diversity of life--male and female The fact that the two sexes have existed for more than one billion years The fact male and female bodies are organized according to different functions The fact there are more than [----] gene expression differences between males and females The fact that testosterone and estrogen are produced in vastly different amounts between the sexes"
X Link 2023-10-02T20:45Z 46.7K followers, 29.7K engagements
"Yes the Y chromosome has been lost in some species of rat and vole due to its inability to fully recombine with the X. Over time this leads to mutations and degradation. But even though it's gone males are still produced. Why The answer is genes. Genes maintain the binary system consistently producing males and females"
X Link 2023-10-03T00:31Z 46.7K followers, [----] engagements
"Cross-sex hormone use in males (female-typical levels of estrogen and testosterone) has a host of detrimental effects to the body. The male body is organized around specific levels of testosterone and estrogen across development. When these are altered to female levels a disorder is induced. And the effects are seen across almost all body tissues. Beginning in the reproductive system high E and low T can result in severely impaired reduction of sperm levels to complete cessation of sperm production full testicular regression with severe cellular damage 25% reduction in testicular volume by"
X Link 2023-10-03T04:58Z 43.7K followers, 276.1K engagements
"You are conflating what bodies look like with what reproductive function bodies are organized around. Genetic information can get translocated but the genetic sex determination system results in anatomy organized around sperm or eggs. Genetic disorders that result in sterility are not evidence that sex in humans is mutable or that it is not binary"
X Link 2023-10-03T16:22Z 46.7K followers, [----] engagements
"Understanding the truth is my first motivation. My second motivation is educating others on why taking cross-sex hormones at opposite sex levels is damaging to your bodily tissues long term and can have permanent effects. This does not bring about a sex change. It induces a disorder"
X Link 2023-10-03T19:12Z 46.7K followers, 12K engagements
"What questions would you have for a plastic surgeon in regards to ethics and gender-affirming care"
X Link 2023-10-03T22:16Z 46.7K followers, [----] engagements
"Great textbook on developmental biology by Oxford. Here are some good sections on how sex is genetically set at conception how we do not all begin as females and how development of the reproductive ducts work"
X Link 2023-10-04T02:34Z 46.7K followers, [----] engagements
"It is also worth noting that this book is very up-to-date in regards to sex development. It discusses how recent work in genetics shows that female is not the default path and that gene networks involved in developing either sex actively repress the opposite sex pathway"
X Link 2023-10-04T02:37Z 46.7K followers, [----] engagements
"Sexes are defined by the difference in gamete size. Males produce sperm females produce eggs. Intersex people are either sterile or produce either sperm or eggs and are therefore male or female. They do not produce a third gamete type and therefore are not a third sex"
X Link 2023-10-04T03:50Z 43.8K followers, 91.6K engagements
"With the Queer Ideology in full swing claiming that gender is fluid or sex can be changed Binary comes in with facts data and science based answers. Order now on Amazon. http://mybook.to/binary http://mybook.to/binary"
X Link 2023-10-04T05:14Z 47K followers, [----] engagements
"Do you know the model for the evolution of sex from isogamy to anisogamy Or the molecular differences between mating types and sexes Or why there are two sexes in the first place What about the detailed developmental genetics involved in producing males vs females in humans Or what about the developmental genetics of [--] disorders of sex development Or the diversity of sex determination mechanisms across species Have you written [--] books on the subject Produced 20+ animated videos I know biology well enough to help educate others. Thats why Im able to effectively communicate complex concepts."
X Link 2023-10-04T05:45Z 47.1K followers, 26.8K engagements
"Scientists can now predict sex with 99% accuracy by looking at your fingerprint. How Small amounts of sweat from the fingers release amino acids and females release about twice the amount of amino acids in their sweat compared to males largely due to hormonal differences. The test is so reliable because testosterone and estrogen levels (but especially T) rarely overlap between the sexes. The problem with this approach of course is that because it seems to be largely hormonally driven those taking opposite sex levels of cross-sex hormones may muddy the results but this is yet to be determined."
X Link 2023-10-04T15:41Z 47.2K followers, 82.2K engagements
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