| Literature DB >> 15654335 |
Hreinn Stefansson1, Agnar Helgason, Gudmar Thorleifsson, Valgerdur Steinthorsdottir, Gisli Masson, John Barnard, Adam Baker, Aslaug Jonasdottir, Andres Ingason, Vala G Gudnadottir, Natasa Desnica, Andrew Hicks, Arnaldur Gylfason, Daniel F Gudbjartsson, Gudrun M Jonsdottir, Jesus Sainz, Kari Agnarsson, Birgitta Birgisdottir, Shyamali Ghosh, Adalheidur Olafsdottir, Jean-Baptiste Cazier, Kristleifur Kristjansson, Michael L Frigge, Thorgeir E Thorgeirsson, Jeffrey R Gulcher, Augustine Kong, Kari Stefansson.
Abstract
A refined physical map of chromosome 17q21.31 uncovered a 900-kb inversion polymorphism. Chromosomes with the inverted segment in different orientations represent two distinct lineages, H1 and H2, that have diverged for as much as 3 million years and show no evidence of having recombined. The H2 lineage is rare in Africans, almost absent in East Asians but found at a frequency of 20% in Europeans, in whom the haplotype structure is indicative of a history of positive selection. Here we show that the H2 lineage is undergoing positive selection in the Icelandic population, such that carrier females have more children and have higher recombination rates than noncarriers.Entities:
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Year: 2005 PMID： 15654335 DOI： 10.1038/ng1508
Source DB: PubMed Journal: Nat Genet ISSN： 1061-4036 Impact factor: 38.330