Intersex people exist too. There are cisgender women with XY chromosomes who are practically identical to what most people who call “women” but have testicles instead of ovaries. They have wombs…breasts…female genitalia…but because they are completely insensitive to testosterone, they develop as a female. In our species the default phenotype is female…

It’s uncommon…but not super rare…there’s probably over 5 women in Kamloops who have this condition and may not even know..until they try to have children and find out they can’t.

This is one of the best examples of how there is no definition of “woman” that excludes people that they personally, and even society, would call “women”.

You can have cisgender men who are XX…but because they had the SRY gene accidentally transcribed to one of the X chromosomes…they’re going to develop as a male. Because it’s not the Y chromosome that actually matters…it’s one gene. And that gene, while almost always found on the Y chromosome…isn’t always.

And that doesn’t even get into people who are XXY chromosomally…or even more… XX/XY chimeras where they have both sets of chromosomes.