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Extensive Population Structure in San, Khoe, and Mixed Ancestry Populations from Southern Africa Revealed by 44 Short 5-SNP Haplotypes
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology. Uppsala University.ORCID iD: 0000-0002-8160-9621
2012 (English)In: Human Biology, ISSN 0018-7143, E-ISSN 1534-6617, Vol. 84, no 6, 695-724 p.Article in journal (Refereed) Published
Abstract [en]

The San and Khoe people currently represent remnant groups of a much larger and widely distributed population of hunter-gatherers and pastoralists who had exclusive occupation of southern Africa before the arrival of Bantu-speaking groups in the past 1,200 years and sea-borne immigrants within the last 350 years. Genetic studies [mitochondrial deoxyribonucleic acid (DNA) and Y-chromosome] conducted on San and Khoe groups revealed that they harbor some of the most divergent lineages found in living peoples throughout the world. Recently, high-density, autosomal, single-nucleotide polymorphism (SNP)-array studies confirmed the early divergence of Khoe-San population groups from all other human populations. The present study made use of 220 autosomal SNP markers (in the format of both haplotypes and genotypes) to examine the population structure of various San and Khoe groups and their relationship to other neighboring groups. Whereas analyses based on the genotypic SNP data only supported the division of the included populations into three main groups-Khoe-San, Bantu-speakers, and non-African populations-haplotype analyses revealed finer structure within Khoe-San populations. By the use of only 44 short SNP haplotypes (compiled from a total of 220 SNPs), most of the Khoe-San groups could be resolved as separate groups by applying STRUCTURE analyses. Therefore, by carefully selecting a few SNPs and combining them into haplotypes, we were able to achieve the same level of population distinction that was achieved previously in high-density SNP studies on the same population groups. Using haplotypes proved to be a very efficient and cost-effective way to study population structure.

Place, publisher, year, edition, pages
2012. Vol. 84, no 6, 695-724 p.
Keyword [en]
Population Structure, Haplotypes, Khoe-San, Khoisan-Speaking, Colored, Southern Africa
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-207126DOI: 10.3378/027.084.0603ISI: 000322906700003OAI: oai:DiVA.org:uu-207126DiVA: diva2:646914
Available from: 2013-09-10 Created: 2013-09-09 Last updated: 2017-12-06

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Schlebusch, Carina M.

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