Friday, May 22, 2015

Evolution of domestic dogs have their origin makes 27 thousand … – LaCronica.com

WASHINGTON (Reuters) Dogs They could have been domesticated much earlier than has been thought, since a new DNA study suggests that the divergence of the wolves would have begun ago by At least 27 000-year ± os.

The origin of the domà © appliances dogs is little known, with evidence of canine features in fossils dating back to the Last Glacial maximum estimates conflicted with generic © policies of divergence má s recent among populations of dogs and wolves.

It has even been suggested that dogs domesticación surgió with the appearance of agriculture, makes about 15 thousand year ± os when humans moved from being just hunters and gatherers to farmers and formed communities.

Swedish researchers studied the genome sequence of an old Siberian wolf, who lived makes 35 thousand year ± os and whose remains were found in the peninsula of Taimyr, in northern Siberia.

The findings, published in the journal Current Biology, show that this individual pertenecÃa to a population that separó a common ancestor of today’s wolves and dogs very close in time to the onset of canine lineage domà © stico.

The scientists, led by Dr. Love Dalen, the Swedish Museum of Natural History in Stockholm, used the old wolf genome to recalibrate the scale of molecular time of wolves and dogs .

They found that the mutation rate is substantially slower than anticipated by most previous studies more, suggesting that the ancestors of dogs diverged from wolves present long before the Last Glacial maximum, which took place over a 22 000 year ± os.

Also © n discovered evidence of the archaic lineage introgresión Wolf Taimyr in current breeds in northeastern Siberia and Greenland, contributing between 1.4 percent and 27.3 percent of their ancestry.

This shows that the ancestors of today’s dogs are derived from multiple regional wolf populations.

The study also © n could explain the profound vÃnculo between dogs and humans, ‘They would be part of the very evolution of society’, for whom the researchers say domesticación started at the very moment of its division.

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