Understanding the relations between social and biological factors in determining the evolution of human populations is one of the principal aims of bio-anthropological research. The recent introduction of unilinearly transmitted polymorphisms of mitochondrial DNA and Y-chromosome has disclosed new possibilities for the study of bio-cultural evolutionary processes. In this communication, I present a study on the relationships between social structure and genetic variation in sub-Saharan Africa based on published and unpublished mitochondrial and Y-chromosomal data relative to a total of 40 populations. The results obtained reveal a striking difference in the genetic structure of farming (Bantu speakers) and hunting-gathering (Pygmies and Bushmen) populations. To explain this difference, I propose that asymmetric gene flow, polyginy and patrilocality, and hence the socio-cultural factors underlying them, have had an important role in determining and differentiating the genetic structure of sub-Saharan populations. The limits and the implications of this study are discussed.
Genetic variation and social structure: A case-study from Africa / DESTRO-BISOL, Giovanni. - In: HUMAN EVOLUTION. - ISSN 0393-9375. - STAMPA. - 20:2-3(2005), pp. 93-98. [10.1007/bf02438727]
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|Titolo:||Genetic variation and social structure: A case-study from Africa|
|Data di pubblicazione:||2005|
|Citazione:||Genetic variation and social structure: A case-study from Africa / DESTRO-BISOL, Giovanni. - In: HUMAN EVOLUTION. - ISSN 0393-9375. - STAMPA. - 20:2-3(2005), pp. 93-98. [10.1007/bf02438727]|
|Appartiene alla tipologia:||01a Articolo in rivista|