INDEPENDENT STRATUM FORMATION ON THE AVIAN SEX CHROMOSOMES REVEALS INTER‐CHROMOSOMAL GENE CONVERSION AND PREDOMINANCE OF PURIFYING SELECTION ON THE W CHROMOSOME
1. Department of Zoology, Edward Grey Institute, University of Oxford, , Oxford, OX1 3PS United Kingdom;2. Department of Genetics, Evolution and Environment, University College, , London, London, WC1E 6BT United Kingdom