About the Authors

Vincent Plagnol

To whom correspondence should be addressed. E-mail: vincent.plagnol@normalesup.org

Affiliation Department of Molecular and Computational Biology, University of Southern California, Los Angeles, California, United States of America

Jeffrey D Wall

Affiliation Department of Molecular and Computational Biology, University of Southern California, Los Angeles, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

VP and JDW analyzed the data and wrote the paper.