Posted on 06/02/2010 5:50:50 PM PDT by SunkenCiv
genetic variation in Africa is structured geographically, and to a lesser extent, linguistically. The findings are consistent with the notion that populations in close geographic proximity that speak linguistically similar languages are more likely to exchange genes.
Furthermore, genetic variation in Africa appears consistent with the natural, geographic barriers that limit gene flow. In particular, there are geographic, and therefore genetic, distinctions between northern African and sub-Saharan African populations due to the vast desert that limited migration.
"Focusing on particular exceptions to these broad patterns will enable us to discern and fully appreciate the complex population histories that have contributed to extant patterns of genetic variation," said Tishkoff, the David and Lyn Silfen University Associate Professor. "Disentangling past population histories is a formidably complicated task that benefits from the synthesis of archaeological, linguistic and genetic data."
(Excerpt) Read more at upenn.edu ...
Read more at http://en.wikipedia.org/wiki/Mitochondrial_Eve.
Thanks.
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This is a follow-on to Pharmboy's Dec 09 topic here: Link from yet another related topic: To all -- please ping me to other topics which are appropriate for the GGG list. |
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There’s no way to determine geographical origin from modern DNA distribution; the guesses of what constitutes “parsimoniousness” not surprisingly follows exactly the original assumptions of the Out-of-Africa / Replacement crowd.
Oooooh, that’s kinda cool.
http://www.google.com/images?q=salvador+dali+egg&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi
What?
I don't know.
Some anthropologists have been arguing that the American Indian connection does not occur until the Sa'ami and the Yakuts linked up somewhere in the 7000BC to 8000BC period ~ which, of course, they did, but the Yakuts linked up with a number of groups at that time.
The Yakuts later on (6000BC to 5000BC made their way to North America and South America.
The problem here is that NONE of the South American Indians today show any sign of Sa'ami relationship. It's strictly North American.
It's pretty clear the Yakuts linkups in Central Asia and South Asia were not necessarily two-way. They'd figured out how to domesticate reindeer, so most likely these were trading expeditions where Yakuts traded reindeer to more primitive people in the far North or South. The Yakuts would have walked away with ermine, arctic fox and other valuable furs.
Let me explain how a smart guy hunts reindeer. First, he takes his family's "tame" reindeer ~ from that Yakuts breed ~ and teaches it to walk into a wild herd and attract a member back to his home where his master leaps out from behind a tree and slaughters the newcomer.
Or, the owner walks into the herd with his tame reindeer. While it provides protective color, the owner slips up beside a wild reindeer, puts his arm around it, and it freezes in place ready to be slaughtered.
There are a number of variations on the technique. BTW, I've picked this up watching internet videos of reindeer herders at work. The tame reindeer plays a major part in all this. More recently, of course, the Sa'ami and others have taken to trucking reindeer around to various feeding grounds. These are referred to as domesticated reindeer ~ but only that tame reindeer is actually domesticated. Older write-ups on Sa'ami hunting techniques refer frequently to the use of the tame reindeer.
No, how can you just walk up to a reindeer and grab it? I think part of it has to do with a problem the Sa'ami have with dogs. Unlike the Yakuts, not all Sa'ami get along with dogs ~ some do, some don't. I suspect they have some hormone in their systems that makes the reindeer think of them as "friendly". That would necessarily irritate the dogs.
Ahem, click on my name to see my dogs.
It's the ankle biters and bigger terriers that all want to carve holes in my legs.
This was reported in Scientific American. The migration of the Mitochondrial DNA was charted using the latest technology. Interestingly the more important aspect of this study was that there is only one race on this planet, the HUMAN race. Of course their are alien’s but that’s UFOunded!
Unless the latest technology was a time machine, it is impossible to determine the geographical origin (or antiquity) of a genetic sequence.
Smaller family sizes and/or “open marriages” (infidelity, high rate of remarriage after accidental death, promiscuity etc etc) will always result in greater so-called diversity when compared with descendants of early riverine agricultural boom populations, when family sizes and infant mortality fell. :’)
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