More From the Max Planck Institute

[Minimalist]

http://www.sciencedaily.com/releases/201...161802.htm

Jan. 21, 2013 — Ancient DNA has revealed that humans living some 40,000 years ago in the area near Beijing were likely related to many present-day Asians and Native Americans.An international team of researchers including Svante Pääbo and Qiaomei Fu of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, sequenced nuclear and mitochondrial DNA that had been extracted from the leg of an early modern human from Tianyuan Cave near Beijing, China. Analyses of this individual's DNA showed that the Tianyuan human shared a common origin with the ancestors of many present-day Asians and Native Americans. In addition, the researchers found that the proportion of Neanderthal and Denisovan-DNA in this early modern human is not higher than in people living in this region nowadays.

The implication of the underlined bit is interesting. What contact there was with HNS and HSS pre-dated 40 kya and spread from there.

[Anomalocaris]

The evidence also suggests the ancesters of modern day Europeans and modern day East and North Asians had become relatively isolated from each other before 40KYa. So it stands to reason Ancesters of Asians had little opportunieis after 40KYa to pick up additional DNA from Neanderthal, whose range did not overlap those of modern East and North Asians.

[Minimalist]

That, too.

We have evidence of HNS in the Levant. Perhaps the mixing took place there and spread in separate waves to the north west and east?

[Anomalocaris]

That, too.

We have evidence of HNS in the Levant. Perhaps the mixing took place there and spread in separate waves to the north west and east?

There is evidence of HNS quite far into western and central asia, including Iran. So the mixing didn't need to happen once in a small area. Could have happened many times across a range of locations.

Also, so far denisovan fossil remains have only been found in north eastern Asia. Yet genetic evidence shows east and north east Asians living in those areas have only small amount of input from denisovan gene pool. The largest amount of denisovan gene contribution are found in some people in southern east Asia in areas like Philippine. So migration that created this mixing between HSS and denisovans would seem to be much more complicated that could be clarified with existing fossil.

[Minimalist]

But it isn't just HNS. You need HSS, too. Yes, the frat party could have happened anywhere you had those elements but if HSS is coming out of Africa one of the first places they would run into is the ANE.

Just speculation. It isn't as if we are going to find petrified condoms or anything.