About the Authors
- Michael F. Hammer, Murray P. Cox, August E. Woerner
- ARL Division of Biotechnology, University of Arizona, Tucson, Arizona, United States of America
- Michael F. Hammer, Fernando L. Mendez
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona, United States of America
- Jeffrey D. Wall
- Institute for Human Genetics, University of California San Francisco, San Francisco, California, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MFH JDW. Performed the experiments: MPC AEW. Analyzed the data: MFH FLM MPC AEW JDW. Wrote the paper: MFH FLM JDW.