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Last surviving woolly mammoths were inbred but not doomed to extinction - EurekAlert
The last population of woolly mammoths was isolated on Wrangel Island off the coast of Siberia 10,000 years ago, when sea levels rose and cut the mountainous island off from the mainland. A new genomic analysis reveals that the isolated mammoths, who lived on the island for the subsequent 6,000 years, originated from at most 8 individuals but grew to 200–300 individuals within 20 generations. The researchers report June 27 in the journal Cell that the Wrangel Island mammoths’ genomes showed signs of inbreeding and low genetic diversity but not to the extent that it can explain their ultimate (and mysterious) extinction.
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