So true and it's a great to remind them of that sort of thing.

You know, you'd think all of the people who say it's purely down to genetics would be natural allies with, you know, molecular biologists (applied genetics). They'd be all like "it's a Y chromosome or nothing" and the biologists would be all like "yeah chromosomes!" because we fucking love chromosomes but no. In fact, it's noticeably absent when you start to think about it.

I wonder why that might be?

The short answer is "because it's infinitely more complicated than that."

Just because you carry the genetic code for anything at all, it doesn't mean you'll express it. The default setting for our DNA is off. So, if something isn't telling it to transcribe, it won't do it. A whole load of reasons could cause that, even before we get to mutations and partial expression or chimeras etc.

Anyway, what i mean is yeah, this meme!

Edit: also, don't beleive the AI. Early fetuses are female, until the Y is activated. You could have an inactivated Y and the fetus could be a woman capable of having children. The default setting is female, not intersex. It could be either but unless a specific event happens, it will always be female. It's a subtle but important difference. This means that all fetuses are female and then turn into a male.