transrants: gravekat: softkats: pizzatomb: aside from being cissexist the whole XX = female and XY = male thing is Straight-Up Wrong AFAB people can have XO, XXX, XXXX and XY chromosomes while AMAB people have have XXYY, XYY, and XX chromosomes and
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original: https://www.tumblr.com/blog/view/andioyu/121404245539