Beringian standstill and spread of native American founders

Native Americans derive from a small number of Asian founders who likely arrived to the Americas via Beringia. However, additional details about the intial colonization of the Americas remain unclear. To investigate the pioneering phase in the Americas we analyzed a total of 623 complete mtDNAs from...

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Detalles Bibliográficos
Autor principal: Bravi, Claudio Marcelo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2007
Materias:
Ciencias Naturales
Native Americans
mtDNAs
Americas
Asia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83022
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83022
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Native Americans
mtDNAs
Americas
Asia
spellingShingle Ciencias Naturales
Native Americans
mtDNAs
Americas
Asia
Bravi, Claudio Marcelo
Beringian standstill and spread of native American founders
topic_facet Ciencias Naturales
Native Americans
mtDNAs
Americas
Asia
description Native Americans derive from a small number of Asian founders who likely arrived to the Americas via Beringia. However, additional details about the intial colonization of the Americas remain unclear. To investigate the pioneering phase in the Americas we analyzed a total of 623 complete mtDNAs from the Americas and Asia, including 20 new complete mtDNAs from the Americas and seven from Asia. This sequence data was used to direct high-resolution genotyping from 20 American and 26 Asian populations. Here we describe more genetic diversity within the founder population than was previously reported. The newly resolved phylogenetic structure suggests that ancestors of Native Americans paused when they reached Beringia, during which time New World founder lineages differentiated from their Asian sister-clades. This pause in movement was followed by a swift migration southward that distributed the founder types all the way to South America. The data also suggest more recent bi-directional gene flow between Siberia and the North American Arctic.
format Articulo
Articulo
author Bravi, Claudio Marcelo
author_facet Bravi, Claudio Marcelo
author_sort Bravi, Claudio Marcelo
title Beringian standstill and spread of native American founders
title_short Beringian standstill and spread of native American founders
title_full Beringian standstill and spread of native American founders
title_fullStr Beringian standstill and spread of native American founders
title_full_unstemmed Beringian standstill and spread of native American founders
title_sort beringian standstill and spread of native american founders
publishDate 2007
url http://sedici.unlp.edu.ar/handle/10915/83022
work_keys_str_mv AT braviclaudiomarcelo beringianstandstillandspreadofnativeamericanfounders
bdutipo_str Repositorios
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