>>33435883That's actually true without even including trans people.
For all you know, your mother is actually your second father because fuck ups happen causing people to have a Y chromosome (and thus being biological men) despite developing female genitalia.
Male calico cats are the perfect example of this. The pattern is a generally female trait, but if they end up having Klinefelter Syndrome and are at least XXY they are male regardless of looking like a female because ONLY males have a Y chromosome.
This is also why the idiots who use intersex people as a third gender are being retarded. They don't know the presence or lack of Y is what science uses to define males.
