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Abstract: Haplogroup R1b-M269 comprises most Western European Y chromosomes; of its main branches, R1b-DF27 is by far the least known, and it appears to be highly prevalent only in Iberia. We have genotyped 1072 R1b-DF27 chromosomes for six additional SNPs and 17 Y-STRs in population samples from Spain, Portugal and France in order to further characterize this lineage and, in particular, to ascertain the time and place where it originated, as well as its subsequent dynamics. We found that R1b-DF27 is present in frequencies ~40% in Iberian populations and up to 70% in Basques, but it drops quickly to 6?20% in France. Overall, the age of R1b-DF27 is estimated at ~4,200 years ago, at the transition between the Neolithic and the Bronze Age, when the Y chromosome landscape of W Europe was thoroughly remodeled. In spite of its high frequency in Basques, Y-STR internal diversity of R1b-DF27 is lower there, and results in more recent age estimates; NE Iberia is the most likely place of origin of DF27. Subhaplogroup frequencies within R1b-DF27 are geographically structured, and show domains that are reminiscent of the pre-Roman Celtic/Iberian division, or of the medieval Christian kingdoms.
Fuente: Sci Rep. 2017 Aug 4;7(1):7341
Editorial: Nature Publishing Group
Año de publicación: 2017
Nº de páginas: 13
Tipo de publicación: Artículo de Revista
DOI: 10.1038/s41598-017-07710-x
ISSN: 2045-2322
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SOLÉ MORATA, NEUS
VILLAESCUSA, PATRICIA
GARCÍA FERNÁNDEZ, CARLA
FONT PORTERIAS, NEUS
ILLESCAS, MARÍA JOSÉ
VALVERDE, LAURA
TASSI, FRANCESCA
GHIROTTO, SILVIA
FÉREC, CLAUDE
ROUAULT, KAREN
JIMÉNEZ MORENO, SUSANA
MARTÍNEZ JARRETA, BEGOÑA
PINHEIRO, MARIA FÁTIMA
MARIA TERESA ZARRABEITIA CIMIANO
CARRACEDO, ÁNGEL
PANCORBO, MARIAN M. DE
CALAFELL, FRANCESC
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