On Wed, Oct 23, 2013 at 10:28:19AM +1300, LizR wrote:
> I didn't realise there was still much doubt about this. I thought studying
> human DNA had made the out of Africa hypothesis fairly robust. (Obviously
> more confirming evidence will add another sigma, or whatever...)
> 

There is some evidence of interbreeding between the H. sapiens that
migrated from Africa, and the indigenous Neanderthal and Denisovan
species. IIRC, the indigineous species contributed something like 10%
of the genetic code to the humans from those areas - N to Europeans,
and D to some island populations off Asia.

So its not quite Out of Africa exlusively, more like mostly "Out of
Africa", with a small dash of "Multiregionalism".

But its fascinating what we've learnt just in the last decade. When my
son asked me (for a science assignment) to name a significant
scientific technology, I immediately said "PCR"!

Cheers
-- 

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Prof Russell Standish                  Phone 0425 253119 (mobile)
Principal, High Performance Coders
Visiting Professor of Mathematics      hpco...@hpcoders.com.au
University of New South Wales          http://www.hpcoders.com.au
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