About the Authors
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, United States of America
Department of Biological Science, Florida State University, Tallahassee, Florida, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: RPM JHM AGC. Performed the experiments: RPM JHM. Analyzed the data: RPM JHM. Wrote the paper: RPM JHM AGC.