Genetic1 testing of Iupiat people currently living in Alaskas North Slope is helping2 Northwestern University scientists fill in the blanks on questions about the migration3 patterns and ancestral pool of the people who populated the North American Arctic over the last 5,000 years. This is the first evidence that genetically4 ties all of the Iupiat and Inuit populations from Alaska, Canada and Greenland back to the Alaskan North Slope, said Northwesterns M. Geoffrey Hayes, senior author of the new study to be published April 29, 2015, in the American Journal of Physical Anthropology5.In this study, all mitochondrial DNA6 haplogroups previously7 found in the ancient remains8 of Neo- and Paleo-Eskimos and living Inuit peoples from across the North American Arctic were found within the people living in North Slope villages.These findings support the archaeological model that the peopling of the eastern Arctic began in the North Slope, in an eastward9 migration from Alaska to Greenland. It also provides new evidence to support the hypothesis that there were two major migrations10 to the east from the North Slope at two different times in history.There has never been a clear biological link found in the DNA of the Paleo-Eskimos, the first people to spread from Alaska into the eastern North American arctic, and the DNA of Neo-Eskimos, a more technologically11 sophisticated group that later spread very quickly from Alaska and the Bering Strait region to Greenland and seemed to replace the Paleo-Eskimo, Hayes said.Our study suggests that the Alaskan North Slope serves as the homeland for both of those groups, during two different migrations. We found DNA haplogroups of both ancient Paleo-Eskimos and Neo-Eskimos in Iupiat people living in the North Slope today.

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1 genetic adj.遺傳的，遺傳學的 參考例句： Its very difficult to treat genetic diseases.遺傳成人兩性疾病治療起來非常困難。 Each daughter cell can receive a full complement of the genetic information.每一個子細胞可以收到遺傳信息的一個完全補償物。