Cytochrome b evolution in birds and mammals: an evaluation of the avian constraint hypothesis.

@article{Stanley1999CytochromeBE,
  title={Cytochrome b evolution in birds and mammals: an evaluation of the avian constraint hypothesis.},
  author={Scott E. Stanley and R Giles Harrison},
  journal={Molecular biology and evolution},
  year={1999},
  volume={16 11},
  pages={1575-85}
}
Patterns of molecular evolution in birds have long been considered anomalous. Compared with other vertebrates, birds have reduced levels of genetic divergence between groups of similar taxonomic ranks for a variety of nuclear and mitochondrial markers. This observation led to the avian constraint hypothesis, which identifies increased functional constraint on avian proteins as the cause for the reduction in genetic divergence. Subsequent investigations provided additional support for the avian… CONTINUE READING

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