I once met someone who was born with what the doctors called 'ambiguous genetalia'. Parents had to make a decision, so they put them in for surgery, and raised them as a girl.
The child was never told, but grew up attracted to girls, and after they didn't really develop breasts, and started losing their hair at 17, the parents told them the truth.
Turns out post-puberty development decided they were more male than female, so they embraced it, had more surgery, and carried on as a man.
They were still a bit feminine looking and slight in build though.
It can happen.
I once met someone who was born with what the doctors called 'ambiguous genetalia'. Parents had to make a decision, so they put them in for surgery, and raised them as a girl.
The child was never told, but grew up attracted to girls, and after they didn't really develop breasts, and started losing their hair at 17, the parents told them the truth.
Turns out post-puberty development decided they were more male than female, so they embraced it, had more surgery, and carried on as a man.
They were still a bit feminine looking and slight in build though.
If the ring finger is longer than the index finger, seems biologically likely. Also, unable to reproduce so the need for a surrogate.