An inbreeding sensitivity gene inDrosophila melanogaster

Summary Experiments are reported which tend to support the hypothesis that a single gene or gene complex may be responsible for inbreeding depression. The gene is located on the third chromosome.I thank R. Grantham and J.M. Legay (Lyon, France), C. Krimbas (Athens, Greece), D. Mohler (USA) and especially R. Milkman (USA) for helpful criticism and suggestions. The Laboratoire de Biométrie is associated with CNRS Laboratory No. 243.