About the Authors

Ruth Hershberg

ruthersh@tx.technion.ac.il

Affiliation Rachel & Menachem Mendelovitch Evolutionary Processes of Mutation & Natural Selection Research Laboratory, Department of Genetics, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel

Dmitri A. Petrov

Affiliation Department of Biology, Stanford University, Stanford, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RH DAP. Performed the experiments: RH. Analyzed the data: RH DAP. Wrote the paper: RH DAP.