Suppose I declare that I am a king. Should you be required to address me as "Your Majesty"? You say, "Williams, that's lunacy! You can't prove such nonsense." You're wrong. It's proved by my declaration. It's no different from a person born with XY chromosomes declaring that he is a woman. The XY sex determination system is the sex determination system found in humans and most other mammals. Females typically have two of the same kind of sex chromosome (XX) and are called the homogametic sex. Males typically have two different kinds of sex chromosomes (XY) and are called the...
