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古mtDNA分析和关切人的起源

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发表于 2009-10-3 20:44 | 显示全部楼层 |阅读模式
Ancient mtDNA analysis and the origin of the Guanches

Nicole Maca-Meyer, Matilde Arnay, Juan Carlos Rando, Carlos Flores, Ana M González, Vicente M Cabrera and José M Larruga
  • 1Departamento de Genética, Universidad de La Laguna, Tenerife, Spain
  • 2Departamento de Prehistoria, Universidad de La Laguna, Tenerife, Spain
  • 3Unidad de Investigación, Hospital Universitario NS de Candelaria, Tenerife, Spain
Correspondence: Dr JM Larruga, Departamento de Genética, Facultad de Biología, Universidad de La Laguna, 38271 Tenerife, Spain. Tel: +34-922-31-83-51; Fax: +34-922-31-83–11; E-mail: jlarruga@ull.es
Received 13 February 2003; Revised 1 July 2003; Accepted 10 July 2003; Published online 24 September 2003.

AbstractThe prehistoric colonisation of the Canary Islands by the Guanches (native Canarians) woke up great expectation about their origin, since the Europeans conquest of the Archipelago. Here, we report mitochondrial DNA analysis (HVRI sequences and RFLPs) of aborigine remains around 1000 years old. The sequences retrieved show that the Guanches possessed U6b1 lineages that are in the present day Canarian population, but not in Africans. In turn, U6b, the phylogenetically closest ancestor found in Africa, is not present in the Canary Islands. Comparisons with other populations relate the Guanches with the actual inhabitants of the Archipelago and with Moroccan Berbers. This shows that, despite the continuous changes suffered by the population (Spanish colonisation, slave trade), aboriginal mtDNA lineages constitute a considerable proportion of the Canarian gene pool. Although the Berbers are the most probable ancestors of the Guanches, it is deduced that important human movements have reshaped Northwest Africa after the migratory wave to the Canary Islands.
Keywords: aDNA, Canary Islands, mtDNA, U6, haplotypes, admixture

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