Y‐chromosome analysis in a Northwest Iberian population: Unraveling the impact of Northern African lineages

  title={Y‐chromosome analysis in a Northwest Iberian population: Unraveling the impact of Northern African lineages},
  author={Luis {\'A}lvarez and Estela Ciria and Sofia L. Marques and Cristina Santos and Mar{\'i}a Pilar Aluja},
  journal={American Journal of Human Biology},
To provide new clues about the genetic origin, composition and structure of the population of the Spanish province of Zamora, with an emphasis on the genetic impact of the period of Islamic rule in the Iberian Peninsula. 
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Population of Pedroches Valley, a hypothetical Berber settlement, located in the northwest portion of Córdoba province (Andalusia, Spain), had been analyzed for its Y‐chromosome diversity, showing low levels of North African E3b1b‐M81 haplogroups, which rejects the hypothesis of a gradual genetic assimilation of Berber settlers during the Islamic period.
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The present composition of the Y chromosomes in Portugal in this haplogroup likely reflects a pre‐Arab component shared with North African populations or testifies, at least in part, to the influence of Sephardic Jews.
The genetic legacy of Paleolithic Homo sapiens sapiens in extant Europeans: a Y chromosome perspective.
A significant correlation between the NRY haplotype data and principal components based on 95 protein markers was observed, indicating the effectiveness of NRY binary polymorphisms in the characterization of human population composition and history.
Mitochondrial DNA characterisation of European isolates: The Maragatos from Spain
Mitochondrial DNA analysis confirms that Maragatos from Spain are a genetically isolated human group and the presence of Neolithic haplogroups in this sample suggests that their isolation culture was not absolute until recent times.
Reduced genetic structure of the Iberian peninsula revealed by Y-chromosome analysis: implications for population demography
The results indicate that neither old or recent Levantine expansions nor North African contacts have influenced the current Iberian Y-chromosome diversity so that geographical patterns can be identified.
Moors and Saracens in Europe: estimating the medieval North African male legacy in southern Europe
The results point to a higher recent Northwest African contribution in Iberia and Sicily in agreement with historical data, and southern Italian regions known to have experienced long-term Arab presence show an enrichment of Northwest African types.
Genetic characterization of uniparental lineages in populations from Southwest Iberia with past malaria endemicity
The variation of uniparental markers in Portuguese populations with high frequency of SCD—Coruche, Pias, and Alcacer do Sal—are analyzed to evaluate if their present‐day pattern of neutral diversity could provide evidence about people inhabiting the area over different time periods.
Genetic structure of Tunisian ethnic groups revealed by paternal lineages.
Overall, the results reveal a certain genetic inter-population diversity, especially among Berber groups, and sexual asymmetry, paternal lineages being mostly of autochthonous origin.
High-resolution analysis of human Y-chromosome variation shows a sharp discontinuity and limited gene flow between northwestern Africa and the Iberian Peninsula.
The most striking results are that contemporary NW African and Iberian populations were found to have originated from distinctly different patrilineages and that the Strait of Gibraltar seems to have acted as a strong (although not complete) barrier to gene flow.