This is not in line with current scientific beliefs at all, and most biologists will confirm that with you. Just like most things in biology and life in general, sex exists on a spectrum. We also distinguish between sex and gender. On the biological front alone, one person's sexual phenotype (what they appear to be) is determined by several factors, including but not limited to: how many chromosomes, how many are X or Y for humans (XXY vs XYY), the SRY gene (basically even if you're XY, if you don't have a functional SRY gene on your Y chromosome, you will develop as if you were XX), hormones such as testosterone and estrogen, and hormone receptors. We're not actually clear on what percentage of the population is noticeably intersex, but it's estimated to be on the same order of magnitude as red hair. This is not including trans at all, this is just human biological sex. Social roles are a whole separate, but very important ballgame. It doesn't seem like you're very familiar with current scientific thought on this topic, but if you're ever curious it's really interesting and I hope you investigate more! Fun fact! The Y chromosome is actually disappearing and we're not quite sure what's going to happen when it disappears. Not that it would happen for a very long time, but there's plenty more we don't know.
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This is not in line with current scientific beliefs at all, and most biologists will confirm that with you. Just like most things in biology and life in general, sex exists on a spectrum. We also distinguish between sex and gender. On the biological front alone, one person's sexual phenotype (what they appear to be) is determined by several factors, including but not limited to: how many chromosomes, how many are X or Y for humans (XXY vs XYY), the SRY gene (basically even if you're XY, if you don't have a functional SRY gene on your Y chromosome, you will develop as if you were XX), hormones such as testosterone and estrogen, and hormone receptors. We're not actually clear on what percentage of the population is noticeably intersex, but it's estimated to be on the same order of magnitude as red hair. This is not including trans at all, this is just human biological sex. Social roles are a whole separate, but very important ballgame. It doesn't seem like you're very familiar with current scientific thought on this topic, but if you're ever curious it's really interesting and I hope you investigate more! Fun fact! The Y chromosome is actually disappearing and we're not quite sure what's going to happen when it disappears. Not that it would happen for a very long time, but there's plenty more we don't know.
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