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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: neolib who wrote (213263)	12/13/2004 1:27:46 AM
From: neolib	Read Replies (2) \| Respond to of 1578143

BTW, a large population (6B souls) relatively well interconnected for breading, with low mortality prior to reproduction, and a relatively low reproduction rate is not evolving as far as I can tell. I should have added that small or isolated populations, high reproduction rates and high selective pressure (high mortality prior to reproduction)is what lets a genetic system evolve. Humans are currently just expanding, not evolving. In fact, the last few hundred years have started to wipe out a lot of racially evolved differences, so I'd say on the mean we are devolving to a common core rather than evolving. But dang, some of those Carib mixes on the Negril beaches sure are cute! But I'm married, and my wife won't let me hang out at the nude ones!

To: neolib who wrote (213263)	12/13/2004 6:14:20 AM
From: combjelly	Respond to of 1578143

"I'd be shocked if intelligence does not have some genetic basis" Oh there probably is. But it isn't Mendelian. So it likely is a relatively large number of genes in particular combinations that code for it. In addition there is a sex specific component to it, at least in humans. There aren't as many female geniuses, OTOH there aren't nearly as many females on the low end either. As a result it isn't going to correlate well with genetics, there are too many factors. And it shouldn't be any great surprise that humans aren't evolving noticeably. They have been, note that something like Tay-Sachs which makes it's carriers resistant to tuberculosis probably wasn't selected for until there were large enough concentrations of people to make it an issue. But most of the physical characteristics there hasn't been any pressure to evolve. Humans have been in pretty much control of their environment since the Ice Age.