About the Authors

Alejandro Sánchez-Gracia

Current address: Departament de Genètica, Universitat de Barcelona, Barcelona, Spain

Affiliation Institute of Evolutionary Biology (CSIC-UPF), Barcelona, Spain

Jose Castresana

jose.castresana@csic.es

Affiliation Institute of Evolutionary Biology (CSIC-UPF), Barcelona, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JC AS-G. Performed the experiments: AS-G. Analyzed the data: JC AS-G. Contributed reagents/materials/analysis tools: JC AS-G. Wrote the paper: JC AS-G.