I *highly* recommend that *any* person reads this article. I have a hunch this got floated around by various folks a long time back, when the article first was written in 2007, but I only just now saw it. If you've ever read anything about how evolutionary biology effects human behavior, this won't be that surprising, but if you haven't, it will be significantly so. Regardless, check it out.
http://www.psychologytoday.com/articles/200706/ten-politically-incorrect-truths-about-human-nature