I think you’re missing nuance with ‘mammals have two sexes. Period’ - there’s a range of intersex possibilities, chromosomes that don’t match organs, chromosomes that aren’t xx or xy (e.g xxy), genetic chimeras with more than one set of sex chromosomes. What you mean is ‘usually’
I think you’re missing nuance with ‘mammals have two sexes. Period’ - there’s a range of intersex possibilities, chromosomes that don’t match organs, chromosomes that aren’t xx or xy (e.g xxy), genetic chimeras with more than one set of sex chromosomes. What you mean is ‘usually’