About the Authors

Kun Tang

To whom correspondence should be addressed. E-mail: tang@eva.mpg.de

Affiliation Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany

Kevin R Thornton

Affiliation Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, California, United States of America

Mark Stoneking

Affiliation Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

KT and MS conceived and designed the experiments and wrote the paper. KT and KRT performed the experiments and contributed reagents/materials/analysis tools. KT analyzed the data.