Genes, peoples and languages.

@article{CavalliSforza1991GenesPA,
  title={Genes, peoples and languages.},
  author={Luigi Luca Cavalli-Sforza},
  journal={Scientific American},
  year={1991},
  volume={265 5},
  pages={
          104-10
        }
}
The genetic history of a group of populations is usually analyzed by reconstructing a tree of their origins. Reliability of the reconstruction depends on the validity of the hypothesis that genetic differentiation of the populations is mostly due to population fissions followed by independent evolution. If necessary, adjustment for major population admixtures can be made. Dating the fissions requires comparisons with paleoanthropological and paleontological dates, which are few and uncertain. A… 
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Genetics and southern African prehistory: an archaeological view.
  • P. Mitchell
  • Sociology
    Journal of anthropological sciences = Rivista di antropologia : JASS
  • 2010
TLDR
This paper reviews these studies from an archaeological standpoint, concentrating on modern human origins, the introduction of pastoralism to southern Africa and admixture between the region's indigenous foragers and incoming Bantu-speaking farmers.
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