Alcohol tolerance and Adh gene frequencies in European and African populations of Drosophila melanogaster J.R. DAVID, H. MERÇOT, P. CAPY, S.F. McEVEY and Jeanine VAN HERREWEGE Genet. Sel. Evol., 18 4 (1986) 405-416 DOI: 10.1051/gse:19860405