This is an interesting infographic. Gender should not be equated to sexual orientation. However gender is not a continuum it is something you are born with and is determined by your chromosomes. Two "X" chromosomes equal female. An "X" and "Y" chromosomes makes you "male". There is no between when everything goes normal. Cases of hermaphrodites and the extremely rare case of having neither genitalia are not different points. Gender is biological. You have no more choice over your gender than you do over what anyone else does. Or who your parents are. Or where and when you are born. You can't change any of these things, why do you think you should have the right to change your gender?
Gender, A Helpful Infographic | The Angry Black Woman
