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Subject: [DNA] PubMed abstract: Y-DNA variation within the Island of Corsica
Date: Sun, 7 Feb 2010 11:12:20 EST


Genet Test Mol Biomarkers. 2009 Dec;13(6):773-7.

Significant genetic differentiation within the population of the Island of
Corsica (France) revealed by y-chromosome analysis.

Ghiani ME, Varesi L, Mitchell RJ, Vona G.

Section of Anthropology, Department of Experimental Biology, University of
Cagliari, Monserrato-Cagliari, Italy.

Using 10 Y-chromosome short tandem repeat allelic and haplotypic
frequencies, we examined genetic variation within the population of Corsica and its
relationship with other Mediterranean populations. The most significant
finding is the high level of genetic differentiation within Corsica, with strong
evidence of an effective barrier to male-mediated gene flow between the south
and the rest of the island. This internal differentiation most probably
results from low exogamy among small isolated populations and also from the
orography of the island, with a central mountain chain running the length of
the island restricting human movement. This physical barrier is reflected not
only in present-day intraisland linguistic and genetic differences but also
in the relatedness of Corsican regions to other Mediterranean groups.
Northwest and Central Corsica are much closer to West Mediterranean populations,
whereas South Corsica is closer to Central-North Sardinia and East
Mediterranean populations.

PMID: 19810819 [PubMed - indexed for MEDLINE]


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