1 Response to ‘About the X-to-Y gene conversion rate’, by Cruciani et al. Zoë H. Rosser, Patricia Balaresque and Mark A. Jobling Department of Genetics, University of Leicester, University Road, Leicester, UK Correspondence and requests for reprints should be addressed to: Prof Mark A. Jobling, Department of Genetics, University of Leicester, University Road, Leicester LE1 7RH, UK Tel.: +44 (0)116 252 3427 Fax: +44 (0)116 252 3378 Email: maj4@le.ac.uk Keywords: X chromosome; Y chromosome; gene conversion; gametolog; PRKX; PRKY Running head: Gene conversion between sex chromosomes