>> They have a Y chromosome. They are a male. It’s the lack of the Y not the presence of two Xs that make a woman a woman > Unfortunately, it just is not that

>> They have a Y chromosome. They are a male. It’s the lack of the Y not the presence of two Xs that make a woman a woman > Unfortunately, it just is not that simple. Unfortunately, it probably is that simple: https://www.webmd.com/men/klinefelter-syndrome https://www.webmd.com/men/klinefelter-syndrome: > Klinefelter syndrome is a genetic condition in which a boy is born with an extra X chromosome. Instead of the typical XY chromosomes in men, they have XXY, so this condition is sometimes called XXY syndrome. > Men with Klinefelter usually don’t know they have it until they run into problems trying to have a child. When people say things like "males have XY chromosomes," it's a somewhat fuzzy shorthand for the idea that "maleness" is determined by the natural progression of certain biological processes. That those processes can rarely take a few unusual twists and turns to get to that phenotype doesn't invalidate the core idea.