Covarion structure in plastid genome evolution: a new statistical test.

  title={Covarion structure in plastid genome evolution: a new statistical test.},
  author={C{\'e}cile An{\'e} and John Gordon Burleigh and Michelle M. McMahon and Michael J. Sanderson},
  journal={Molecular biology and evolution},
  volume={22 4},
Covarion models of molecular evolution allow the rate of evolution of a site to vary through time. There are few simple and effective tests for covarion evolution, and consequently, little is known about the presence of covarion processes in molecular evolution. We describe two new tests for covarion evolution and demonstrate with simulations that they perform well under a wide range of conditions. A survey of covarion evolution in sequenced plastid genomes found evidence of covarion drift in… CONTINUE READING
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