• Rudee@lemmy.ml
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    2 天前

    Normally no, since one gonosome comes from each parent: The mother (XX) and the father (XY).

    If somehow a series of unfortunate meioses occurred to create a zygote that had two Y chromosomes and no X chromosome, the foetus would absolutely not be viable, since the X chromosome contains many essential genes, while the Y chromosome is a truncated version that has less than half the information

    • Ledericas@lemm.ee
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      2 天前

      There are situations that occur during fertilization, if the egg somehow loses it genetic material, the sperm enters the egg, but it duplicates its own half genome to form a 46 pairs but this is abnormal, because the gene pattering and also epigenetic silencing is different from males and females, so it forms abnormal mass of tissue called a mole; it can be partial or complete, one of the types can become a rare form of cancer

      • Rudee@lemmy.ml
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        2 天前

        TIL meiosis gone wrong can cause a cumshot to give you cancer.

        Thanks, internet stranger!

        • Ledericas@lemm.ee
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          1 天前

          theres one that have the normal egg with its half of genetic material, but situation where 2 sperm enters at once.