Females have nipples but why do men have them? They can’t even breastfeed babies but we know that all humans begin life in the womb as females.
Females have two X chromosomes, while males have an X and Y.
The fusion of XX chromosomes results in a female while XY results in a male. But as an embryo, everyone starts out females. It’s that Y chromosome that makes a man a man.
Both males and females have similar tissues and body parts in the womb as embryos.
which is why nipples are present in both of them. It is the effect of the genes, the Y chromosome and the hormone testosterone that brings about the masculine changes to the embryo.
But nipples start to develop before this differentiation occurs at about five and a half weeks.
So even though the embryo becomes male, it is still left with nipple and some breast tissue.
So if we sum it up in simple words, men have nipple
because they already had them right when they were an embryo or even before they became male.
So we all were female before the fusion happened, yes even men!