Nature versus Nurture

BBC talks about nature vs. nurture in the context of the Olympics, including historical context. I recently had a discussion similar to this to do with biological immunities and disease susceptibility with a friend, one big question we encountered was: Has enough time passed for genetic selection to really have a significant effect? Our sample rate was <100 years, but even with the slavery context here, I don't think you're talking about that many generation. Also, as crash course has taught us, slaves imported into South America and the Caribbean for hard labour did not survive, a constant supply of new slaves were needed to keep the plantations running. There were no children to produce a legacy. (via Most Watched Today)