Palaeo-Eskimo genetic ancestry and the peopling of Chukotka and North America.
Nature
; 570(7760): 236-240, 2019 06.
Article
de En
| MEDLINE
| ID: mdl-31168094
ABSTRACT
Much of the American Arctic was first settled 5,000 years ago, by groups of people known as Palaeo-Eskimos. They were subsequently joined and largely displaced around 1,000 years ago by ancestors of the present-day Inuit and Yup'ik1-3. The genetic relationship between Palaeo-Eskimos and Native American, Inuit, Yup'ik and Aleut populations remains uncertain4-6. Here we present genomic data for 48 ancient individuals from Chukotka, East Siberia, the Aleutian Islands, Alaska, and the Canadian Arctic. We co-analyse these data with data from present-day Alaskan Iñupiat and West Siberian populations and published genomes. Using methods based on rare-allele and haplotype sharing, as well as established techniques4,7-9, we show that Palaeo-Eskimo-related ancestry is ubiquitous among people who speak Na-Dene and Eskimo-Aleut languages. We develop a comprehensive model for the Holocene peopling events of Chukotka and North America, and show that Na-Dene-speaking peoples, people of the Aleutian Islands, and Yup'ik and Inuit across the Arctic region all share ancestry from a single Palaeo-Eskimo-related Siberian source.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Phylogenèse
/
Inuits
/
Phylogéographie
/
Migration humaine
Type d'étude:
Prognostic_studies
Limites:
Humans
Pays/Région comme sujet:
Africa
/
America do norte
/
Asia
/
Europa
Langue:
En
Journal:
Nature
Année:
2019
Type de document:
Article
Pays d'affiliation:
République tchèque