Understanding transgenderism.

[Jehanne]

The presence of regional variation does not imply the absence of heritability or biological contributions. Environments, including cultural ones, will always magnify biological differences, that's Evolution 101.

Some biologists, such as Professor Jerry Coyne, are hard determinists, and reject libertarian free will, and by that paradigm, our gender and where we choose to live are products of external and internal events beyond our control