Chagyrskaya Female Neandertal That Lived 60,000-80,000 Years Ago – Studied

Conny Waters – MessageToEagle.com – Neanderthals and Denisovans are the closest evolutionary relatives of present-day humans. Analyses of their genomes showed that they contributed genetically to present-day people outside sub-Saharan Africa

Until now, only the genomes of two Neandertals have been sequenced to high quality: one from Vindjia Cave in modern-day Croatia and one from Denisova Cave in Siberia’s Altai Mountains.

The researchers extracted the DNA from bone powder and sequenced it to high quality. They estimate that the female Neandertal lived 60,000-80,000 years ago. From the variation in the genome, they estimate that she and other Siberian Neandertals lived in small groups of less than 60 individuals.

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The researchers also show that the Chagyrskaya Neandertal was more closely related to the Croatian than to the other Siberian Neandertal which lived some 40,000 years before the Chagyrskaya Neandertal. This shows that Neandertal populations from the West at some point replaced other Neandertal populations in Siberia.

“We also found that genes expressed in the striatum of the brain during adolescence showed more changes that altered the resulting amino acid when compared to other areas of the brain,” says Fabrizio Mafessoni, lead author of the study.

The results suggest that the striatum—a part of the brain which coordinates various aspects of cognition, including planning, decision-making, motivation, and reward perception—may have played a unique role in Neandertals.

Research

Written by Conny Waters – MessageToEagle.com – AncientPages.com Staff Writer