> > "There are two genders." The belief comes from watching birds and bees.
> Nature has many examples of physical gender not being straightforward; egg tempreture determining development in crocadiles and other reptiles for one.
Temperature-dependent sex determination results in offspring of one sex or the other, so how does this refute the observation across species that there are two sexes? Please explain your reasoning.
I guess it contradicts the belief that sex is determined at conception? I don't know, I'm not familiar with crocodile biology.
For humans specifically we not only have xx and xy, but also xxx, xyy, xxxx, xxyy, xxxxx, xxxxy, 46xy dsd. There is a de la Chapelle syndrome, persistent Müllerian duct syndrome and more. These are just the most obvious things that muddy the waters, and I don't really know much about that topic, but confidently saying "there are two genders and you can tell by watching birds and bees" is anti intellectual
> Nature has many examples of physical gender not being straightforward; egg tempreture determining development in crocadiles and other reptiles for one.
Temperature-dependent sex determination results in offspring of one sex or the other, so how does this refute the observation across species that there are two sexes? Please explain your reasoning.