Genetic studies on the Senegal population. I. Mitochondrial DNA polymorphisms - PubMed (original) (raw)

Genetic studies on the Senegal population. I. Mitochondrial DNA polymorphisms

R Scozzari et al. Am J Hum Genet. 1988 Oct.

Abstract

The mtDNA of 186 Senegalese, mainly Wolof and Peuls, were analyzed by means of six restriction enzymes: HpaI, BamHI, HaeII, MspI, AvaII, and HincII. Two of the HpaI, one of the HaeII, two of the MspI, and one of the AvaII morphs had not been described before. The only enzymes which enabled Wolof and Peuls to be differentiated were HincII and, to a lesser extent, HaeII. Important differences emerge in the comparison of Senegalese with Bantu of South Africa and with Bushmen, the only other Africans who, as far as we know, were studied for the same genetic markers. Though Senegalese mtDNAs display typical African features (presence and frequency of HpaI morph 3 and high incidence of AvaII morph 3), the distribution of MspI and AvaII patterns markedly differentiates Senegalese from the others. The phylogeny of mtDNA types in Africa well portrays how the three African groups are clearly distinguishable genetic entities. Bushmen lie at one end of the range of variability, Senegalese being at the other end but still fairly closely related to Bantu. The information provided by individual restriction enzymes to the distinction among the three major ethnic groups is reviewed and discussed.

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