Titre du document / Document title

Genetic substructure in South African Bantu-speakers: Evidence from autosomal DNA and Y-chromosome studies = XXX

Auteur(s) / Author(s)

LANE A. B. ⁽¹⁾ ; SOODYALL H. ⁽¹⁾ ; ARNDT S. ⁽¹⁾ ; RATSHIKHOPHA M. E. ⁽¹⁾ ; JONKER E. ⁽¹⁾ ; FREEMAN C. ⁽¹⁾ ; YOUNG L. ⁽¹⁾ ; MORAR B. ⁽¹⁾ ; TOFFIE L. ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Human Genetics, School of Pathology, South African Institute for Medical Research and University of the Witwatersrand, Johannesburg, 2001, AFRIQUE DU SUD

Résumé / Abstract

The extent of genetic differentiation between seven South African Bantu-speaking groups (Zulu, Xhosa, Tsonga/Shangaan, Southern Sotho, Pedi, Tswana, and Venda) was assessed from coancestry coefficients (F_ST) estimated from autosomal serogenetic, DNA, and Y-chromosome DNA haplotypes. The overall F_ST obtained from the autosomal data was 0.002, and that from the Y chromosome data was 0.014. The genetic relationships between groups examined were inferred from their cluster affinities in phylogenetic trees constructed from the genetic distances between them. Both autosomal and Y-chromosome DNA studies reveal that 6 of the 7 South African Bantu-speaking groups cluster according to their linguistic groupings, the exception being the Tsonga, who do not cluster with other Nguni language speakers, but rather with the Venda who live close to them. This suggests that the invading Shangaan-speakers, whose Nguni language was adopted by the Tsonga, did not have a major effect on the Tsonga gene pool, and that gene flow from the Venda into the Tsonga may have been considerable. Genetic distances were found to correlate with geographic distances between the regions where each group's apparent population density is the highest. Linguistic distances were also found to correlate with genetic distances, but linguistic and geographic distances showed no correlation. Together, these results suggest that linguistic and some genetic differentiation took place before the groups (or their forerunners) reached their present-day locations, and that further genetic change occurred after their arrival.

Revue / Journal Title

American journal of physical anthropology   ISSN 0002-9483 

Source / Source

2002, vol. 119, n^o2, pp. 175-185 [11 page(s) (article)] (31 ref.)

Langue / Language

Anglais

Editeur / Publisher

Wiley-Liss, New York, NY, ETATS-UNIS  (1918) (Revue)

Mots-clés anglais / English Keywords

Ethnic group ; Africa ; Human ; Genetic marker ; Genetic variability ; Linguistic analysis ; Geographical variation ; Autochthonal language ; Population genetics ; Y-Chromosome ; DNA ; Autosomal character ; South Africa ; Anthropology ;

Mots-clés français / French Keywords

Ethnie ; Afrique ; Sotho ; Bantu ; Venda ; Tsonga ; Xhosa ; Zulu ; Tswana ; Homme ; Marqueur génétique ; Variabilité génétique ; Analyse linguistique ; Variation géographique ; Langue autochtone ; Génétique population ; Chromosome Y ; DNA ; Caractère autosomique ; Afrique du Sud ; Anthropologie ;

Mots-clés espagnols / Spanish Keywords

Etnia ; Africa ; Hombre ; Marcador genético ; Variabilidad genética ; Análisis linguístico ; Variación geográfica ; Lengua autóctona ; Genética población ; Cromosoma Y ; DNA ; Carácter autosómico ; Sudáfrica ; Antropología ;

Localisation / Location

INIST-CNRS, Cote INIST : 3188, 35400010928936.0050