Posted on 11/29/2013 7:51:37 AM PST by Pharmboy
CAMBRIDGE, Mass., Nov. 28 (UPI) -- Humans lived for thousands of years in small, isolated populations and resulting inbreeding shaped the course of human evolution, a U.S. researcher says.
Research suggests the severe inbreeding may have created many health problems and the small populations were likely a barrier to the development of complex culture and technologies, NewScientist.com reported Thursday.
David Reich of Harvard Medical School in Boston -- who has sequenced the genome of Neanderthals and that of another extinct human, the Denisovans -- said both species were severely inbred due to small populations.
"Archaic populations had low genetic diversity, really extraordinarily low," he said. "It's among the lowest diversity of any organism in the animal kingdom."
The DNA of one Neanderthal, obtained from a toe bone, had almost no diversity in about one-eighth of the genome -- both copies of each gene were identical.
That suggests the individual's parents were half-siblings, Reich said.
(Excerpt) Read more at upi.com ...
ManBearPig. :=)
Educational institutions are in fact proving this with teachers unions,
“The genetic defect known as ‘liberalism’ can probably be traced back to this.”
I was thinking this too. Explains a lot, really.
And we wonder why the Torah states over and over again with whom you can and can’t have relations.
If that be so, then the middle eastern mohammedans should be the most brilliant people in the world as they marry their cousins.
Well, if any school would know about inbreeding, it would be Harvard.
Just remember that Islam encourages first cousin marriage and has been inbred for over 1,400+ years. That’s one of the reasons it is a psychotic death cult.
Lot and his daughters...
“Come, let us make our father drink wine, and let us lie with him that we may preserve our family through our father.” So they made their father drink wine that night, and the firstborn went in and lay with her father; and he did not know when she lay down or when she arose. On the following day, the firstborn said to the younger, “Behold, I lay last night with my father; let us make him drink wine tonight also; then you go in and lie with him, that we may preserve our family through our father.”
5,000 years ago would have been far too recent - by then, we had diverse civilizations in the Middle East, China, etc.
More like 69,000 - 77,000 years ago.
http://en.wikipedia.org/wiki/Toba_catastrophe_theory
Regards,
You’re right! Thanks for posting that.
“a barrier to the development of complex culture and technologies”
i can see where this has played out in several races .......
As a modern day example, I offer the Hapsburg family.
As a further complication, my mother had 9 siblings.
I have cousins I've never met and don't even know their names.
I remember asking the elderly participants in this about the situation and they always responded "muddy roads".
No, actually it isn't.
“with such small populations and their isolation it does make sense. “
It makes total sense, and if true, and is a very likely reasib as to why these species became extinct.
This could also explain why those who left Africa founded more civilizations and spread farther than those who remained in Africa. They were a subset of the African population but gained Neanderthal diversity plus everyone else they met.
Humans have an effective population size of 1000 to 2000 people, meaning that we could replicate the entire human genetic diversity in 1K to 2K people.
A group of any 55 chimps has more genetic diversity than the human race. This is probably due to humans having fewer chromosomes than other apes (at some point, this mutation slashed our species’ population), and compounded by the Mount Toba eruption 70K years ago that cut our numbers to maybe 10K people.
We’ve been through more population bottlenecks and thus have far less diversity than other primates. Though they’ll catch up because their populations have fallen significantly.
Interesting thought.
Among Muslims, on average, first-cousin marriages probably constitute about half of all marriages around the world. If you add marriages to second cousins you probably have a large majority of marriages. Muslims are victims of genetic decay.
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