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Scientists have found five distinct groups of dogs were already present at the end of the last ice age, and their legacy lives on in our pets today.

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Writing in the journal Science, Skoglund and colleagues report how they sequenced 27 ancient dog nuclear genomes from canines found in Europe, the near east and Siberia, dating from 800 to 11,000 years old.

The results reveal that by the end of the last ice age there were at least five genetically distinct groups of dogs in existence – suggesting the origins of our canine companions stretch back even further. However, all the groups appear to have descended from a single common ancestor, suggesting domestication may have occurred from a single population of ancient wolves.


https://www.theguardian.com/world/2020/oct/29/five-distinct-...
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