wat.

You know that "fraternal" doesn't mean one boy one girl right? It means they don't look alike. Like the opposite of identical.

Fraternal means they come from two different fertilized eggs. Each egg can be a boy or girl. All girl/boy twins are fraternal, but not all fraternals are girl/boy. Identical twins are only identical because they come from one egg which split into two after fertilization, creating an identical copy.