I understand science is hard (try organic, for instance) but at least do a basic internet search. Allow google to be your bbf for a few minutes.

As for "the 'transexual' phenomenon that permeates our societal discussions," that is not science based. It is based on people's ignorance of things different from them, their prurient interest in another's business, and in some folks' willingness to declare war on other people's children. There would be no "phenomenon" otherwise.