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Friday, December 9, 2016

Geneticists have found that Neanderthals killed


A study conducted by Kelly Harris of Stanford University and Rasmus Nielsen from the University of California at Berkeley helped to understand why the Neanderthals who came to Eurasia before the CRO-magnons and its hundreds of thousands of years, then became extinct. According to experts, is primarily the Neanderthals destroyed the accumulated in their genome of deleterious mutations.


photo: ru.wikipedia.org

A model built by scientists, allowed to assume that by the time of arrival in Europe of Homo sapiens, Neanderthals had significantly (40%) less genetic diversity than their newfound rivals. This reduced their ability to get rid of genetic mutations, and the less they became, the more aggravated this problem. As a result, this led to the disappearance of the Neanderthals as a species, say the researchers, who published their work in the journal Genetics.

However, previously, different groups of researchers have expressed different versions of what caused the extinction of the Neanderthals can be called home. For example, in may of this year, archaeologists representing the University of Colorado at boulder, suggested that Neanderthals went extinct due to cold. Although directly to the cold they were fitted even better than the CRO-magnons, they needed large amounts of food, and during cold weather it is not enough, and hunt had to spend more than allowed to recover the prey. Another popular version says that Neanderthals were simply fighting with CRO-magnons, while the latter did not win. Also, some experts admit that the death they brought African microorganisms listed the people that they were immune.

It should be noted that although the Neanderthals became extinct as a species, to some extent, they continue to live in modern humans of European and Asian origin, their genome in 1-4 per cent inherited it from Neanderthals. The Neanderthals are unable to mix fully with Homo sapiens, scientists explain that, apparently, the two species differ too much among themselves to leave a large number of “common” descendants, and only a small percentage of Neanderthal genes were compatible with the genes of “major” ancestors of modern humans. By the way, in a new study of this phenomenon is given another explanation — perhaps the genes of Neanderthals were simply more “weak”, which survived, those who had less.

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