edit: on a more serious note, yes, when studying the biology of humans or similar organisms probably 99% of the time you can pretend there are only two genders/sexes, but
that doesn’t make it true
even just 1.7% of the U.S. population is still a pretty big number (~580k people)
deleted by creator
https://www.playstation.com/en-us/accessories/access-controller/
edit: on a more serious note, yes, when studying the biology of humans or similar organisms probably 99% of the time you can pretend there are only two genders/sexes, but