Artículo
The Genetic History of Native Americans
Reich, David; Patterson, Nick; Campbell, Desmond; Tandon, Arti; Mazieres, Stéphane; Ray, Nicolas; Parra, Maria V.; Rojas, Winston; Duque, Constanza; Mesa, Natalia; García, Luis F.; Triana, Omar; Blair, Silvia; Maestre, Amanda; Dib, Juan C.; Bravi, Claudio Marcelo
; Bailliet, Graciela
; Corach, Daniel
; Hünemeier, Tábita; Bortolini, Maria Cátira; Salzano, Francisco M.; Petzl Erler, María Luiza; Acuña Alonzo, Victor; Aguilar-Salinas, Carlos; Canizales Quinteros, Samuel; Tusié Luna, Teresa; Riba, Laura; Rodríguez Cruz, Maricela; Lopez Alarcón, Mardia; Coral Vazquez, Ramón
Fecha de publicación:
08/2012
Editorial:
Nature Publishing Group
Revista:
Nature
ISSN:
0028-0836
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The peopling of the Americas has been the subject of extensive genetic, archaeological and linguistic research; however, central questions remain unresolved1, 2, 3, 4, 5. One contentious issue is whether the settlement occurred by means of a single6, 7, 8 migration or multiple streams of migration from Siberia9, 10, 11, 12, 13, 14, 15. The pattern of dispersals within the Americas is also poorly understood. To address these questions at a higher resolution than was previously possible, we assembled data from 52 Native American and 17 Siberian groups genotyped at 364,470 single nucleotide polymorphisms. Here we show that Native Americans descend from at least three streams of Asian gene flow. Most descend entirely from a single ancestral population that we call ?First American?. However, speakers of Eskimo?Aleut languages from the Arctic inherit almost half their ancestry from a second stream of Asian gene flow, and the Na-Dene-speaking Chipewyan from Canada inherit roughly one-tenth of their ancestry from a third stream. We show that the initial peopling followed a southward expansion facilitated by the coast, with sequential population splits and little gene flow after divergence, especially in South America. A major exception is in Chibchan speakers on both sides of the Panama isthmus, who have ancestry from both North and South America.
Palabras clave:
Native Americans
,
Peopling of America
,
Genomics
,
South America
,
North America
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Articulos(IMBICE)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA CELULAR (I)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA CELULAR (I)
Citación
Reich, David; Patterson, Nick; Campbell, Desmond; Tandon, Arti; Mazieres, Stéphane; et al.; The Genetic History of Native Americans; Nature Publishing Group; Nature; 488; 7411; 8-2012; 370-374
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