Topic ID #30439 - posted 12/20/2013 7:30 AM

Neanderthal Genome Sequence Reveals Interbreeding In Four Early Human Species



Charlie Hatchett

Neanderthal Genome Sequence Reveals Interbreeding In Four Early Human Species

Found this interesting:

"...The genome comparisons also show that Denisovans interbred with a mysterious fourth group of early humans also living in Eurasia at the time. That group had split from the others more than a million years ago, and may have been the group of human ancestors known as Homo erectus, the fossils of which indicate their presence in Europe and Asia a million or more years ago..."

[popular-archaeology.com]

The paper is:

The complete genome sequence of a Neanderthal from the Altai Mountains

Abstract

We present a high-quality genome sequence of a Neanderthal woman from Siberia. We show that her parents were related at the level of half-siblings and that mating among close relatives was common among her recent ancestors. We also sequenced the genome of a Neanderthal from the Caucasus to low coverage. An analysis of the relationships and population history of available archaic genomes and 25 present-day human genomes shows that several gene flow events occurred among Neanderthals, Denisovans and early modern humans, possibly including gene flow into Denisovans from an unknown archaic group. Thus, interbreeding, albeit of low magnitude, occurred among many hominin groups in the Late Pleistocene. In addition, the high-quality Neanderthal genome allows us to establish a definitive list of substitutions that became fixed in modern humans after their separation from the ancestors of Neanderthals and Denisovans.

[www.nature.com]

Charlie Hatchett

[www.pre-clovis.com]

[www.forum.pre-clovis.com]

[www.blog.pre-clovis.com]





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