Evolution and behavior (Score 1)

Would you expect behavior changes to be dictated by genetics rather then culture on a level that was even noticeable? I'm not sure it would be possible, but it would be interesting to look at different cultural groups and see if you see similar levels of mutation. For example do populations that are still living in stone age cultures (Amazon tribes for example) show a similar increase in mutation. Could one then start to look at the cultural influences on evolution (or mutation depending on your semantics)? I would guess that the trick would be finding groups with different genetic backgrounds who share cultures (or major cultural traits). Different religious groups might be good to look at since it is a major cultural influence that is often spread without heavy genetic mixing (European Christians vs African Christians, Arab Muslims vs Asian Muslims, etc). Since I would guess that most sexual selection is more influenced by cultural then environmental factors it might turn up some very interesting results.