We already have established linkages that are ten thousand years oldin Europe, so now been able to trace human biological continuity backa full 40,000 years is great news. Because it is all local, a lot ofdistractions disappear. Even better they are clearly family.
What this also continues to confirm is that when agricultural manarose ten thousand years ago, their expanding population simplyabsorbed the local non agricultural peoples. We see exactly thishappening today with our first nation peoples. The majority arealready hybrids and it is inevitable that this will continue apaceas they are now successfully fitting into the greater whole justabout everywhere.
Preservation of an inbred tribe depends on population success andthat has become totally irrelevant in the modern world. It is nowwiser to optimize genetic diversity instead to attract maximum hybridvigor.
It is remarkable how the march of time dissolves away all localconceits in progress of our genetic inheritance.
Fossil human tracesline to modern Asians
The person shared acommon origin with the ancestors of modern Asians
22 January 2013
http://www.bbc.co.uk/news/science-environment-21123717
Researchers have been able to trace a line between some of theearliest modern humans to settle in China and people living in theregion today.
The evidence comesfrom DNA extracted from a 40,000-year-old leg bone found in a cavenear Beijing.Results show that theperson it belonged to was related to the ancestors of present-dayAsians and Native Americans.
The results arepublished in the journal PNAS.
Humans who lookedbroadly like present-day people started to appear in the fossilrecord of Eurasia between 40,000 and 50,000 years ago.
But many questionsremain about the genetic relationships between these early modernhumans and present-day Homo sapiens populations.
For example, someevidence hints at extensive migration into Europeafter the lastIce Age.
And fossil findsfrom Red Deer Cave, also in China, and Iwo Eleru inNigeria point to a hitherto unappreciated diversity among LatePleistocene humans.
New technique
The team managed toextract genetic material from an ancient leg bone found in 2003 atthe site of Tianyuan Cave outside Beijing.
They managed toextract the type of DNA found in the nuclei of cells (nuclear DNA)and genetic material from the cell's "powerhouses" - knownas mitochondria.
They used newtechniques that can identify ancient genetic information from anarchaeological find, even when large amounts of DNA from soilbacteria are also present.
Analysis of theperson's DNA showed that they were related to the ancestors ofpresent-day Asians and Native Americans. But the analysis showed thatthis individual had already diverged from the ancestors ofpresent-day Europeans.
The fossils werediscovered in 2003 at Tianyuan near Beijing
"More analyses ofadditional early modern humans across Eurasia will further refine ourunderstanding of when and how modern humans spread across Europe andAsia", said co-author Svante Pääbo, from the Max PlanckInstitute for Evolutionary Anthropology in Leipzig, Germany.Research in the lastfew years has shown that early modern humans interbred with ancienthuman species such as the Neanderthals and Denisovans as theymigrated from Africa and settled across the world.
Around 40,000 yearsago, the Neanderthals and Denisovans were being replaced by Homosapiens. Genetic studies of people living at this important crossoverperiod could help scientists understand when and how thisinterbreeding took place.
The researchers foundthat the person from Tianyuan cave carried about the same proportionof Neanderthal and Denisovan DNA as people in the region today.
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