Srsly, in the year 2021, there's no conclusive proof that trannie-ism is predetermined. Not one.
No "trannie gene."
No "trannie brain."
Nothing.
Furthermore, anyone of any status who pipes up and goes, "Uh... Um... Where's the proof?" gets immediately shouted down by the PC mob.
It's July 2021. Time for some proof. Where's the proof?