News and Commentary
Heredity (2008) 100, 444–445; doi:10.1038/hdy.2008.9; published online 13 February 2008
Mitochondria and the W chromosome: Low variability on the W chromosome in birds is more likely to indicate selection on mitochondrial genes
N Lane
Correspondence: Dr N Lane, Department of Surgery, Royal Free and UCL Medical School, UCL, London, UK. e-mail: n.lane@medsch.ucl.ac.uk

