That's exactly my point. Genetics. You are either born male or female, in all but rare cases of intersex people. It's about the chromosomes; XY = Male, XX = Female. No one, other than perhaps god if you choose to believe, assigns your sex to you at birth. For the most part one is born Male, Female. Gender is a different story, something you develop and identify with as you grow as a person. I'm a died in the wool liberal in most every respect, but this push by the new-left to deny accepted science and fact almost as hard as the looney far right is infuriating.