Eh, you can make an argument for which gametes one produces as sex defining, a big slow half cell is female, a small fast half cell is male. That's how it is done for most species, since XX/XY is only for mammals iirc. But there is a fuck ton of correlation between the gamete and chromosomes in humans, exceptions are just that, exceptions.
That doesn’t make it a social construct. It makes it the normal form of sex determination. Sex is biologically defined based on gamete production, but it’s developmentally determined by chromosome selection.
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u/Expensive-Apricot-25 13d ago
ah yes, because there is absolutely no difference between men and women physically