There’s a phrasing you often here coming from transgender individuals and the lgbt community as a whole, that is “I was born X and its not a choice” or “I was born this way”, or ‘I’ve always been X I was just born in the wrong body Y”, etc. What I find particularly interesting about this is that it is fundamentally a essentialist view given it is more a matter of identity which puts them in the same grouping of beliefs as racial supremacists whom usually directly appose transgender identity and homosexuality. This is ironic for both sides given both need this essentialism of identity to justify their own views and ground them.
Essentialism as a view is difficult to uphold when not grounded genetically, when it is abstract like in this case one must first show that one can even know the essensia of something and that I no easy task and probably one of the most difficult epistemic conjectures one can make with any validity.
Maybe there is some sort of genetic proof for these ideas, I am ignorant in that area of study for the most part. If so let me know, but if not then there does seem to be a fundamental issue in the ideas of homosexuals and trans who take up this particular approach to identity. I would think a much more valid approach is the subjective constructionist arguement.