About the Authors

Mathias Currat

Affiliations Computational and Molecular Population Genetics Lab, Zoological Institute, University of Bern, Bern, Switzerland, Genetics and Biometry Laboratory, Department of Anthropology and Ecology, University of Geneva, Geneva, Switzerland

Laurent Excoffier

To whom correspondence should be addressed. E-mail: laurent.excoffier@zoo.unibe.ch

Affiliation Computational and Molecular Population Genetics Lab, Zoological Institute, University of Bern, Bern, Switzerland

Competing Interests

The authors have declared that no conflicts of interest exist.

Author Contributions

MC and LE conceived and designed the experiments. MC performed the experiments. MC and LE analyzed the data. MC and LE wrote the paper.