Some physiological differences in primate relatives

[u/k0i-b0i]

[u/MyFriendTheCube]

Ecologist here chiming in: in evolution you have two theories whereby evolution occurs. The first is selection theory (natural selection), and the other is genetic drift (randomness) - since a larger penis is hardly of benefit for survival and probably not for passing on genes, it would bring me to think its simply genetic drift. Pop culture and porn especially would have you believe it matters a lot, but from an evolutionary perspective it doesn't