Linkage disequilibrium and recombination in hominid mitochondrial DNA.

@article{Awadalla1999LinkageDA,
  title={Linkage disequilibrium and recombination in hominid mitochondrial DNA.},
  author={Philip Awadalla and Adam Eyre-Walker and J. Maclean Smith},
  journal={Science},
  year={1999},
  volume={286 5449},
  pages={
          2524-5
        }
}
The assumption that human mitochondrial DNA is inherited from one parent only and therefore does not recombine is questionable. Linkage disequilibrium in human and chimpanzee mitochondrial DNA declines as a function of the distance between sites. This pattern can be attributed to one mechanism only: recombination. 
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