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Genomic landscape of positive natural selection in Northern European populations.
Umeå University, Faculty of Medicine, Department of Pharmacology and Clinical Neuroscience, Neurology.
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2010 (English)In: European Journal of Human Genetics, ISSN 1018-4813, E-ISSN 1476-5438, Vol. 18, no 4, 471-478 p.Article in journal (Refereed) Published
Abstract [en]

Analyzing genetic variation of human populations for detecting loci that have been affected by positive natural selection is important for understanding adaptive history and phenotypic variation in humans. In this study, we analyzed recent positive selection in Northern Europe from genome-wide data sets of 250 000 and 500 000 single-nucleotide polymorphisms (SNPs) in a total of 999 individuals from Great Britain, Northern Germany, Eastern and Western Finland, and Sweden. Coalescent simulations were used for demonstrating that the integrated haplotype score (iHS) and long-range haplotype (LRH) statistics have sufficient power in genome-wide data sets of different sample sizes and SNP densities. Furthermore, the behavior of the F(ST) statistic in closely related populations was characterized by allele frequency simulations. In the analysis of the North European data set, 60 regions in the genome showed strong signs of recent positive selection. Out of these, 21 regions have not been discovered in previous scans, and many contain genes with interesting functions (eg, RAB38, INFG, NOS1AP, and APOE). In the putatively selected regions, we observed a statistically significant overrepresentation of genetic association with complex disease, which emphasizes the importance of the analysis of positive selection in understanding the evolution of human disease. Altogether, this study demonstrates the potential of genome-wide data sets to discover loci that lie behind evolutionary adaptation in different human populations.

Place, publisher, year, edition, pages
Nature Publishing Group , 2010. Vol. 18, no 4, 471-478 p.
Keyword [en]
natural selection, genetic variation, population, Europe
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URN: urn:nbn:se:umu:diva-35512DOI: 10.1038/ejhg.2009.184ISI: 000275726900016PubMedID: 19844263OAI: diva2:344758
Available from: 2010-08-20 Created: 2010-08-20 Last updated: 2010-12-21Bibliographically approved

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Andersen, Peter M
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