Affiliation: | Department of Biological Sciences, Imperial College London, Silwood Park, Ascot SL5 7PY, U.K.;Institute of Zoology, Zoological Society of London, Regent's Park, London NW1 4RY, U.K.;Lehrstuhl für Tierzucht, Technical University of Munich, Alte Akademie 12, 85354 Freising-Weihenstephan, Germany |