I want to rescue this from my account on the birdsite but I once got into arguing with TERFs (it happens, try not to judge me too harshly) and as a biologist I just wanted to push back a little on the "it's just biology" line, so I wrote the following:

Okay, sex determination in humans.

This shit is COMPLICATED and this will probably be a longish thread. Sorry. But I've seen a lot of people claim that "biology says" that everyone is either male or female, full stop, and it's just not true. 1/22

@stevegis_ssg - this is fantastic. Maybe also worth adding that a) HRT probably affects more of this than most people think, so it's still not fixed at birth, and b) even if none of this was true, it's still wouldn't be an excuse for discrimination or hate.