Genetic polymorphisms in autochthonous Basques from Northern Navarre

Calderón, R.; Pérez-Miranda, A.M.; Fuciarelli, Maria; Scano, Giusepina; Carrión, Mónica; Alfonso‐Sánchez, Miguel Á.; Peña, José A.; Ambrosio, Beatriz; Stefano, Gianfranco De

doi:10.1127/anthranz/64/2006/173

anthranz

2006

DOI: 10.1127/anthranz/64/2006/173

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Genetic polymorphisms in autochthonous Basques from Northern Navarre

R. Calderón

A.M. Pérez-Miranda²,

Maria Fuciarelli³

et al.

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2011

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“…Despite being an important fraction of the Iberian Basque community, Navarrese Basques were the least scrutinized from the genetic viewpoint until recent times. The lack of genetic information has been partially solved throughout the last decade with several investigations focusing on the genetic diversity of this Basque geographical group (Pérez‐Miranda et al, 2004, 2005; Calderón et al, 2006; García‐Obregón et al, 2007). However, genetic variability of the maternal lineages still remains unexplored.…”

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The maternal legacy of Basques in northern navarre: New insights into the mitochondrial DNA diversity of the Franco‐Cantabrian area

Cardoso

Alfonso‐Sánchez

Valverde

et al. 2011

American J Phys Anthropol

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Autochthonous Basques are thought to be a trace from the human population contraction that occurred during the Last Glacial Maximum, based mainly on the salient frequencies and coalescence ages registered for haplogroups V, H1, and H3 of mitochondrial DNA in current Basque populations. However, variability of the maternal lineages still remains relatively unexplored in an important fraction of the Iberian Basque community. In this study, mitochondrial DNA diversity in Navarre (North Spain) was addressed for the first time. To that end, HVS-I and HVS-II sequences from 110 individuals were examined to identify the most relevant lineages, including analysis of coding region SNPs for the refinement of haplogroup assignment. We found a prominent frequency of subhaplogroup J1c (11.8%) in Navarre, coinciding with previous studies on Basques. Subhaplogroup H2a5, a putative autochthonous Basque lineage, was also observed in Navarre, pointing to a common origin of current Basque geographical groups. In contrast to other Basque subpopulations, comparative analyses at Iberian and European scales revealed a relevant frequency of subhaplogroup H3 (10.9%) and a frequency peak for U5b (15.5%) in Navarre. Furthermore, we observed low frequencies for maternal lineages HV0 and H1 in Navarre relative to other northern Iberian populations. All these findings might be indicative of intense genetic drift episodes generated by population fragmentation in the area of the Franco-Cantabrian refuge until recent times, which could have promoted genetic microdifferentiation between the different Basque subpopulations.

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mentioning

confidence: 99%

The maternal legacy of Basques in northern navarre: New insights into the mitochondrial DNA diversity of the Franco‐Cantabrian area

Cardoso

Alfonso‐Sánchez

Valverde

et al. 2011

American J Phys Anthropol

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Genetic polymorphisms in autochthonous Basques from Northern Navarre

Cited by 1 publication

References 0 publications

The maternal legacy of Basques in northern navarre: New insights into the mitochondrial DNA diversity of the Franco‐Cantabrian area

The maternal legacy of Basques in northern navarre: New insights into the mitochondrial DNA diversity of the Franco‐Cantabrian area

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