gender *roles* are a social construct; *gender* is heavily influenced by biology. *sex* is determined by our genetics - XX, XY, genetic sequences, etc. accompanied by primary and secondary sex characteristics (bobs, peen, vagene, body shape, bone density) - *gender* is determined by how our body reacts to the presence or absence of certain levels of hormones. When I was born, I was born male. I will always be a biological male (this is my *sex*). My *gender* as I grew up turned out to be male as I learned what I like and what I don't like. However, as puberty set in and dysphoria followed, I felt the need to change my *gender* to match my desired sex.
