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Extensive linkage disequilibrium in small human populations in Eurasia
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2002 (English)In: American Journal of Human Genetics, ISSN 0002-9297, E-ISSN 1537-6605, Vol. 70, no 3, 673-685 p.Article in journal (Refereed) Published
Abstract [en]

The extent of linkage disequilibrium (LD) was studied in two small food-gathering populations-Evenki and Saami- and two larger food-producing populations-Finns and Swedes-in northern Eurasia. In total, 50 single-nucleotide polymorphisms (SNPs) from five genes were genotyped using real-time pyrophosphate DNA sequencing, whereas 14 microsatellites were genotyped in two X-chromosomal regions. In addition, hypervariable region I of the mtDNA was sequenced to shed light on the demographic history of the populations. The SNP data, as well as the microsatellite data, reveal extensive levels of LD in Evenki and Saami when compared to Finns and Swedes. mtDNA-sequence variation is compatible with constant population size over time in Evenki and Saami but indicates population expansion in Finns and Swedes. Furthermore, the similarity between Finns and Swedes in SNP allele- and haplotype-frequency distributions indicate that these two populations may share a recent common origin. These findings suggest that populations such as the Evenki and the Saami, rather than the Finns, may be particularly suited for the initial coarse mapping of common complex diseases.

Place, publisher, year, edition, pages
2002. Vol. 70, no 3, 673-685 p.
Keyword [en]
single-nucleotide polymorphisms, real-time pyrophosphate, lipoprotein-lipase gene, modern human origins, disease genes, demographic history, haplotype variation, sequence diversity, mapping genes, nuclear-dna
Identifiers
URN: urn:nbn:se:kth:diva-21321ISI: 000173880000011OAI: oai:DiVA.org:kth-21321DiVA: diva2:340019
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Uhlén, Mathias

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