The genetic landscape of European Y-chromosomes has been widely surveyed. However, French male lineages are still poorly characterized, being scarce the current genetic contribution to the demographic history of France.
We have studied, at Y-chromosome level, French population from 7 different regions throughout France: Nord-Pas-de-Calais (Lille), Bretagne (Rennes), Alsace (Strasbourg), Île-de-France (Paris), Auvergne (Clermont-Ferrand), Provence-Alpes-Côte d’Azur (Marseille) and Midi-Pyrénées (Toulouse).
More than five hundred male samples were genotyped for 27 Y-chromosome biallelic markers and 17 Y-STRs, in order to assess the degree of population sub-structuring of male lineages on this population.
The results obtained show a significant level of population sub-structuring when Bretagne was compared with the remaining regions grouping together as a single cluster, obtaining a value of 6.83% (p = 0.0000) for the proportion of the total variance explained by differences between populations, when using Y-SNPs data.
Our data will contribute to elucidate the genetic composition of France as well as to reconstruct the demographic history of European populations. Likewise, the population sub-structuring detected entails that special care must be taken when Y-chromosome databases of France are used for forensic casework.
- Ramos-Luis, E.; Blanco-Verea, A.; Brion, M.; Van Huffel, V.; Carracedo, A. & Sanchez-Diz, P. (2009). Phylogeography of French male lineages. Forensic Science International: Genetics Supplement Series, 2(1), 439-441.
Peoples: French | Places: Alsace, Auvergne, Bretagne, Île-de-France, Midi-Pyrénées, Nord-Pas-de-Calais, and Provence-Alpes-Côte d’Azur | Topics: - | DNA Type: Y-SNP and Y-STR