The place of metropolitan France in the European genomic landscape.
Hum Genet
; 139(8): 1091-1105, 2020 Aug.
Article
en En
| MEDLINE
| ID: mdl-32266522
ABSTRACT
Unlike other European countries, the human population genetics and demographic history of Metropolitan France is surprisingly understudied. In this work, we combined newly genotyped samples from various zones in France with publicly available data and applied both allele frequency and haplotype-based methods to describe the internal structure of this country, using genome-wide single nucleotide polymorphism (SNP) array genotypes. We found out that French Basques, already known for their linguistic uniqueness, are genetically distinct from all other groups and that the populations from southwest France (namely the Gascony region) share a large proportion of their ancestry with Basques. Otherwise, the genetic makeup of the French population is relatively homogeneous and mostly related to Southern and Central European groups. However, a fine-grained, haplotype-based analysis revealed that Bretons slightly separated from the rest of the groups, due mostly to gene flow from the British Isles in a time frame that coincides both historically attested Celtic population movements to this area between the 3th and the ninth centuries CE, but also with a more ancient genetic continuity between Brittany and the British Isles related to the shared drift with hunter-gatherer populations. Haplotype-based methods also unveiled subtle internal structures and connections with the surrounding modern populations, particularly in the periphery of the country.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Variación Genética
/
Haplotipos
/
Genoma
/
Flujo Génico
/
Frecuencia de los Genes
/
Genética de Población
Límite:
Humans
País/Región como asunto:
Europa
Idioma:
En
Revista:
Hum Genet
Año:
2020
Tipo del documento:
Article
País de afiliación:
España