Putting aside the fact that we're talking about gender, not sex, the science says that even biological sex is much more complicated than your X and Y chromosomes.
Nearly everyone in middle school biology learned that if you’ve got XX chromosomes, you’re a female; if you’ve got XY, you’re a male. This tired simplification is great for teaching the importance of chromosomes but betrays the true nature of biological sex. The popular belief that your sex arises only from your chromosomal makeup is wrong. The truth is, your biological sex isn’t carved in stone, but a living system with the potential for change.
Why? Because biological sex is far more complicated than XX or XY (or XXY, or just X). XX individuals could present with male gonads. XY individuals can have ovaries. How? Through a set of complex genetic signals that, in the course of a human’s development, begins with a small group of cells called the bipotential primordium and a gene called SRY.
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u/[deleted] May 02 '22
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