About the Authors

Sagi Snir

Affiliation Department of Evolutionary and Environmental Biology and The Institute of Evolution, University of Haifa Mount Carmel, Haifa, Israel

Yuri I. Wolf

Affiliation National Center for Biotechnology Information, NLM, National Institutes of Health, Bethesda, Maryland, United States of America

Eugene V. Koonin

koonin@ncbi.nlm.nih.gov

Affiliation National Center for Biotechnology Information, NLM, National Institutes of Health, Bethesda, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SS YIW EVK. Performed the experiments: SS YIW. Analyzed the data: SS YIW EVK. Contributed reagents/materials/analysis tools: SS YIW. Wrote the paper: YIW EVK.