Just FYI..That second pic (right) is a medical condition that happens to a fraction of the population. See, it's like this (gotta love the learning channel), before a fetus takes on one sex or another both male and females have the same genital precursors. If it develops into a male, the center 'button' (I can't remember the clinical name) develops into a penis. If the gender is female, that button stays the same and becomes the clitoris. The pic on the right is what happens when the process goes "part of the way" in the other direction, so to speak. I saw a really good documentary on 48 hours a while back about this kind of thing. People with this condition often suffer from alot of gender identity issues because they develop hormonally and physically with neither gender being dominant.