About the Authors
- Peter D Keightley
- School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
- Martin J Lercher
- Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
- Adam Eyre-Walker
- Centre for the Study of Evolution and School of Life Sciences, University of Sussex, Brighton, United Kingdom
The authors have declared that no competing interests exist.
PK, ML, and AEW conceived and designed the experiments, analyzed the data, and wrote the paper.