Originally Posted by WhiteWhale
Well, I mean the founder effect can be seen in a lot of closed communities. It's the reason Amish people are usually born with an extra finger. I think morals went as far as empathy and protecting the tribe. In smaller communities in America it's not as uncommon as you think for people to marry within their family tree. It usually takes a few generations before problems arise.
Also, I post this any time inbreeding comes up.
Man, and the NFL coaching trees are considered incestuous...