• JackFrostNCola@lemmy.world
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    5 hours ago

    Moron here: Are XY females sterile or is it possible for them to pass on the Y, along with a male partner Y gene to give the baby YY genes? Or is this combination non-viable and wont develop?

    • Baguette@lemm.ee
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      4 hours ago

      Mothers always pass the X chromosome due to how the egg works from what I remember. The sperm determines whether you get x or y for the second part.

      There is a rare event where you can have multiple sex chromosomes, like XYY, but the X is always present (at least for humans). Considering the genes in an X chromosome are vital to life, even if we could artificially create YY, it would probably end up nonviable