The genetic prehistory of the New World Arctic.
Science
; 345(6200): 1255832, 2014 08 29.
Article
em En
| MEDLINE
| ID: mdl-25170159
ABSTRACT
The New World Arctic, the last region of the Americas to be populated by humans, has a relatively well-researched archaeology, but an understanding of its genetic history is lacking. We present genome-wide sequence data from ancient and present-day humans from Greenland, Arctic Canada, Alaska, Aleutian Islands, and Siberia. We show that Paleo-Eskimos (~3000 BCE to 1300 CE) represent a migration pulse into the Americas independent of both Native American and Inuit expansions. Furthermore, the genetic continuity characterizing the Paleo-Eskimo period was interrupted by the arrival of a new population, representing the ancestors of present-day Inuit, with evidence of past gene flow between these lineages. Despite periodic abandonment of major Arctic regions, a single Paleo-Eskimo metapopulation likely survived in near-isolation for more than 4000 years, only to vanish around 700 years ago.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Inuíte
/
Genoma Humano
/
Migração Humana
País/Região como assunto:
America do norte
/
Asia
/
Europa
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Dinamarca