A single and early migration for the peopling of the Americas supported by mitochondrial DNA sequence data
To evaluate the number and time of the migration(s) that colonized the New World we analyzed all available sequences of the first hypervariable segment of the human mitochondrial DNA control region, including 544 Native Americans. Sequence and population trees showed that the Amerind, Na-Dene, and E...
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ftpubmed:oai:pubmedcentral.nih.gov:20009 2023-05-15T15:54:30+02:00 A single and early migration for the peopling of the Americas supported by mitochondrial DNA sequence data Bonatto, Sandro L. Salzano, Francisco M. 1997-03-04 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC20009 http://www.ncbi.nlm.nih.gov/pubmed/9050871 en eng The National Academy of Sciences of the USA http://www.ncbi.nlm.nih.gov/pmc/articles/PMC20009 http://www.ncbi.nlm.nih.gov/pubmed/9050871 Copyright © 1997, The National Academy of Sciences of the USA Biological Sciences Text 1997 ftpubmed 2013-08-29T06:57:30Z To evaluate the number and time of the migration(s) that colonized the New World we analyzed all available sequences of the first hypervariable segment of the human mitochondrial DNA control region, including 544 Native Americans. Sequence and population trees showed that the Amerind, Na-Dene, and Eskimo are significantly closer among themselves than anyone is to Asian populations, with the exception of the Siberian Chukchi, that in some analyses are closer to Na-Dene and Eskimo. Nucleotide diversity analyses based on haplogroup A sequences suggest that Native Americans and Chukchi originated from a single migration to Beringia, probably from east Central Asia, that occurred ≈30,000 or ≈43,000 years ago, depending on which substitution rate is used, with 95% confidence intervals between ≈22,000 and ≈55,000 years ago. These results support a model for the peopling of the Americas in which Beringia played a central role, where the population that originated the Native Americans settled and expanded. Some time after the colonization of Beringia they crossed the Alberta ice-free corridor and peopled the rest of the American continent. The collapse of this ice-free corridor during a few thousand years ≈14,000–20,000 years ago isolated the people south of the ice-sheets, who gave rise to the Amerind, from those still in Beringia; the latter originated the Na-Dene, Eskimo, and probably the Siberian Chukchi. Text Chukchi eskimo* Beringia PubMed Central (PMC) |
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Biological Sciences Bonatto, Sandro L. Salzano, Francisco M. A single and early migration for the peopling of the Americas supported by mitochondrial DNA sequence data |
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Biological Sciences |
description |
To evaluate the number and time of the migration(s) that colonized the New World we analyzed all available sequences of the first hypervariable segment of the human mitochondrial DNA control region, including 544 Native Americans. Sequence and population trees showed that the Amerind, Na-Dene, and Eskimo are significantly closer among themselves than anyone is to Asian populations, with the exception of the Siberian Chukchi, that in some analyses are closer to Na-Dene and Eskimo. Nucleotide diversity analyses based on haplogroup A sequences suggest that Native Americans and Chukchi originated from a single migration to Beringia, probably from east Central Asia, that occurred ≈30,000 or ≈43,000 years ago, depending on which substitution rate is used, with 95% confidence intervals between ≈22,000 and ≈55,000 years ago. These results support a model for the peopling of the Americas in which Beringia played a central role, where the population that originated the Native Americans settled and expanded. Some time after the colonization of Beringia they crossed the Alberta ice-free corridor and peopled the rest of the American continent. The collapse of this ice-free corridor during a few thousand years ≈14,000–20,000 years ago isolated the people south of the ice-sheets, who gave rise to the Amerind, from those still in Beringia; the latter originated the Na-Dene, Eskimo, and probably the Siberian Chukchi. |
format |
Text |
author |
Bonatto, Sandro L. Salzano, Francisco M. |
author_facet |
Bonatto, Sandro L. Salzano, Francisco M. |
author_sort |
Bonatto, Sandro L. |
title |
A single and early migration for the peopling of the Americas supported by mitochondrial DNA sequence data |
title_short |
A single and early migration for the peopling of the Americas supported by mitochondrial DNA sequence data |
title_full |
A single and early migration for the peopling of the Americas supported by mitochondrial DNA sequence data |
title_fullStr |
A single and early migration for the peopling of the Americas supported by mitochondrial DNA sequence data |
title_full_unstemmed |
A single and early migration for the peopling of the Americas supported by mitochondrial DNA sequence data |
title_sort |
single and early migration for the peopling of the americas supported by mitochondrial dna sequence data |
publisher |
The National Academy of Sciences of the USA |
publishDate |
1997 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC20009 http://www.ncbi.nlm.nih.gov/pubmed/9050871 |
genre |
Chukchi eskimo* Beringia |
genre_facet |
Chukchi eskimo* Beringia |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC20009 http://www.ncbi.nlm.nih.gov/pubmed/9050871 |
op_rights |
Copyright © 1997, The National Academy of Sciences of the USA |
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