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Correlation between genetic and geographic structure in Europe

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  • Oscar Lao
  • Timothy T Lu
  • Michael Nothnagel
  • Olaf Junge
  • Sandra Freitag-Wolf
  • Amke Caliebe
  • Miroslava Balascakova
  • Jaume Bertranpetit
  • Laurence A Bindoff
  • David Comas
  • Gunilla Holmlund
  • Anastasia Kouvatsi
  • Milan Macek
  • Isabelle Mollet
  • Walther Parson
  • Jukka Palo
  • Rafal Ploski
  • Antti Sajantila
  • Adriano Tagliabracci
  • Ulrik Gether
  • Thomas Werge
  • Fernando Rivadeneira
  • Albert Hofman
  • André G Uitterlinden
  • Christian Gieger
  • Heinz-Erich Wichmann
  • Andreas Rüther
  • Stefan Schreiber
  • Christian Becker
  • Peter Nürnberg
  • Matthew R Nelson
  • Michael Krawczak
  • Manfred Kayser
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Understanding the genetic structure of the European population is important, not only from a historical perspective, but also for the appropriate design and interpretation of genetic epidemiological studies. Previous population genetic analyses with autosomal markers in Europe either had a wide geographic but narrow genomic coverage [1, 2], or vice versa [3-6]. We therefore investigated Affymetrix GeneChip 500K genotype data from 2,514 individuals belonging to 23 different subpopulations, widely spread over Europe. Although we found only a low level of genetic differentiation between subpopulations, the existing differences were characterized by a strong continent-wide correlation between geographic and genetic distance. Furthermore, mean heterozygosity was larger, and mean linkage disequilibrium smaller, in southern as compared to northern Europe. Both parameters clearly showed a clinal distribution that provided evidence for a spatial continuity of genetic diversity in Europe. Our comprehensive genetic data are thus compatible with expectations based upon European population history, including the hypotheses of a south-north expansion and/or a larger effective population size in southern than in northern Europe. By including the widely used CEPH from Utah (CEU) samples into our analysis, we could show that these individuals represent northern and western Europeans reasonably well, thereby confirming their assumed regional ancestry.

Original languageEnglish
JournalCurrent Opinion in Cell Biology
Volume18
Issue number16
Pages (from-to)1241-8
Number of pages8
ISSN0960-9822
DOIs
Publication statusPublished - 26 Aug 2008

    Research areas

  • Europe, European Continental Ancestry Group, Genetics, Population, Genotype, Geography, Humans, Linkage Disequilibrium, Polymorphism, Single Nucleotide, Journal Article, Research Support, Non-U.S. Gov't

ID: 52584279