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#sexes — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #sexes, aggregated by home.social.

  1. Waterhemp has recently evolved separate M & F sexes from a monoecious ancestor. This study reveals surprising #chromosomal complexity associated with this transition, challenging assumptions of how separate #sexes evolve @PLOSBiology plos.io/46sTg6u

  2. The #Republican president also has sought to block federal spending on #gender-affirming #medical care for those under age 19—instead promoting talk therapy only to treat young #transgender people. In addition, #SCOTUS has allowed him to kick transgender #ServiceMembers out of the #military, even as court battles continue. #Trump also signed another #ExecutiveOrder to define the #sexes as only male & female.

    #law #discrimination #bigotry #LGBTQ
    #CivilRights #HumanRights #privacy
    #BodilyAutonomy

  3. TIL: males have 25% more neurons in the visual cortex than females

    TIL: males have 25% more neurons in the visual cortex than... #science #sexes #hormones

    medicalxpress.com/news/2012-09

  4. “I see a lot of people are talking about #biological #sexes and #gender right now. ...

    If you know a bit about biology you will probably say that biological sex is caused by chromosomes, XX and you’re female, XY and you’re male. This is “chromosomal sex” but is it “biological sex”? Well...

    Turns out there is only ONE GENE on the Y chromosome that really matters to sex. It’s called the SRY gene. During human embryonic development the SRY protein turns on male-associated genes. Having an SRY gene makes you “genetically male”. But is this “biological sex”?

    Sometimes that SRY gene pops off the Y chromosome and over to an X chromosome. Surprise! So now you’ve got an X with an SRY and a Y without an SRY. What does this mean?

    A Y with no SRY means physically you’re female, chromosomally you’re male (XY) and genetically you’re female (no SRY). An X with an SRY means you’re physically male, chromsomally female (XX) and genetically male (SRY). But biological sex is simple! There must be another answer...
    1/4

  5. In species with separate #sexes, #females and #males often differ in their #morphology, #physiology and #behavior. Such sex-specific adaptations imply differences between females and males in the degree of mate competition, mate choice and parental care.
    #Biology #sflorg
    sflorg.com/2022/11/bio11302201