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Жители Оркнейских о-вов родственны якутам и пакистанцам

Orkney Islanders have Siberian relatives

Orkney Islanders are more closely related to people in Siberia and in Pakistan than those in Africa and the near East, according to a novel method to chart human migrations.

The surprising findings come from a new way to infer ancient human movements from the variation of DNA in people today, conducted by a team from the University of Oxford and University College Cork, which has pioneered a technique that analyses the entire human genetic makeup, or genome.

Although it provides relative genetic contributions of one group to another, rather than timings, it confirms how the first modern humans came out of Africa 50,000 years ago, mostly from a group in southern Africa called the San.

But the subsequent movements around the world, via the near east, central Asia and then Europe, turned up some surprises including a strong similarity between the Sindih, a people who once lived in Pakistan, and Orkney Islanders, or Orcadians.

In turn, the Orcadians are closely related to the people who first colonised Siberia.

"Reindeer herders (a people called the Yakut) are indeed unexpectedly related to British, because one of their strongest signals of ancestry is from Orcadians, the only British population in the sample" says Dr Daniel Falush of University College Cork, a co-author on the paper in the journal PLoS Genetics.

The Orcadians, or those closely related to them in central/northern Europe, also contribute to two other North East Asian populations, the Hezhen and Han from Northern China.

"Humans like to tell stories and amongst the most captivating is the story of the global spread of modern humans from their original homeland in Africa," says Dr Falush.

"Traditionally this has been the preserve of anthropologists but geneticists are now starting to make an important contribution."

Previous methods have either concentrated on one part of the human genetic code (for example, just the Y-chromosome) or a greatly oversimplified model of heredity.

"Our technique enables us to identify more subtle details about genetic contributions than other methods," says Dr Garrett Hellenthal of the University of Oxford, a co-author.

"By incorporating the inheritance of 'blocks' of DNA between generations, rather than just individual genes, it captures a panoramic view of the sharing of patterns of DNA across the entire human genome," he says.

"This allows us to consider a vast number of possible colonisation scenarios - not just the ones people have already thought of - and use an algorithm to determine the most likely migration routes."

The new technique was used to analyse 2540 genetic markers using DNA data from 927 individuals of diverse ethnicity whose DNA was collected by the Human Diversity Project.

The researchers believe their method can cope with much larger datasets with over 500,000 genetic markers and are now working on a detailed picture of migrations into Europe.


29/05/2008 - 14:46
# 1

а нельзя ли для особо бестолковых дать хотя бы краткий перевод на русском?


А кто не видит свет в глазах моих - дальтоник! © Jam

ПОДОБРАВШЕМУ ДИКУЮ ПТИЦУ - что делать дальше?

29/05/2008 - 21:13
# 2

Эхх, было бы время... но надеюсь, кто-нибудь из других северян да воспоможет Wink

johnnydoe (не проверено)
30/05/2008 - 03:30
# 3

Речь о том, что оркнейцы по своим генетическим данным имеют сходство с жителями Сибири, сев. Китая и Пакистана. Не ясно, что означает здесь "сходство" - это все-таки понятие относительное.

Можно представить, что это - прото-индоевропейские корни оркнейцев.