Is Liza Minnelli a boy or a girl?

Through their maturity levels and their genitalia structure. Gender is determined by chromosomes A male has an X and a Y chromosome. a female has 2 X chromosomes

mama cells and daddy if mama give you more than dad you are a girl if dad give you more than mom you are a boy

Because of the hormones they produce.

They just say what comes first alphabetically. "B" comes before "G" so it's boys and girls club.

Some men like men, some men like women, some men like both men and women. Some women like men, some women like women, some women like both men and women. Different people love in different ways :)