Oh, and a Dobzhansky quote for you:
As theoretical possibilities, one can envisage that man might be genetically determined as aggressive or submissive, warlike or peaceful, territorial or wanderer, selfish or generous, mean or good. Are any of these possibilities likely to be realized? Would the fixation of any of these dispositions, so that they become uncontrollable urges or drives, increase the adaptiveness of a species which relies on culture for its survival? I believe that the answers to these questions are in the negative.