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"Dogs were domesticated not once, but twice ..." Topic

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Tango0102 Jun 2016 9:55 p.m. PST

… in different parts of the world.

"The question, 'Where do domestic dogs come from?', has vexed scholars for a very long time. Some argue that humans first domesticated wolves in Europe, while others claim this happened in Central Asia or China. A new paper, published in Science, suggests that all these claims may be right. Supported by funding from the European Research Council and the Natural Environment Research Council, a large international team of scientists compared genetic data with existing archaeological evidence and show that man's best friend may have emerged independently from two separate (possibly now extinct) wolf populations that lived on opposite sides of the Eurasian continent. This means that dogs may have been domesticated not once, as widely believed, but twice.

A major international research project on dog domestication, led by the University of Oxford, has reconstructed the evolutionary history of dogs by first sequencing the genome (at Trinity College Dublin) of a 4,800-year old medium-sized dog from bone excavated at the Neolithic Passage Tomb of Newgrange, Ireland. The team (including French researchers based in Lyon and at the National Museum of Natural History in Paris) also obtained mitochondrial DNA from 59 ancient dogs living between 14,000 to 3,000 years ago and then compared them with the genetic signatures of more than 2,500 previously studied modern dogs.

The results of their analyses demonstrate a genetic separation between modern dog populations currently living in East Asia and Europe. Curiously, this population split seems to have taken place after the earliest archaeological evidence for dogs in Europe. The new genetic evidence also shows a population turnover in Europe that appears to have mostly replaced the earliest domestic dog population there, which supports the evidence that there was a later arrival of dogs from elsewhere. Lastly, a review of the archaeological record shows that early dogs appear in both the East and West more than 12,000 years ago, but in Central Asia no earlier than 8,000 years ago…"
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RavenscraftCybernetics Inactive Member03 Jun 2016 2:57 p.m. PST

woof woof

StarfuryXL503 Jun 2016 10:33 p.m. PST

Who let them out … again.

Tango0105 Jun 2016 12:07 p.m. PST



Great War Ace Inactive Member06 Jun 2016 7:41 a.m. PST

First doggies in the Americas? I read that somewhere. Why couldn't domesticated dogs show up in three separate places?…

Gunfreak Supporting Member of TMP07 Jun 2016 3:10 p.m. PST

Because dogs where probably domesticated before humans got to north America

Personal logo Bowman Supporting Member of TMP12 Jun 2016 4:51 p.m. PST

Precolumbian dog breads all seem to have developed from Asian canines.

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