African populations and the evolution of human mitochondrial DNA.

@article{Vigilant1991AfricanPA,
  title={African populations and the evolution of human mitochondrial DNA.},
  author={Linda Vigilant and Mark Stoneking and H Harpending and Kristen Hawkes and A. C. Wilson},
  journal={Science},
  year={1991},
  volume={253 5027},
  pages={
          1503-7
        }
}
The proposal that all mitochondrial DNA (mtDNA) types in contemporary humans stem from a common ancestor present in an African population some 200,000 years ago has attracted much attention. To study this proposal further, two hypervariable segments of mtDNA were sequenced from 189 people of diverse geographic origin, including 121 native Africans. Geographic specificity was observed in that identical mtDNA types are shared within but not between populations. A tree relating these mtDNA… 

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