Alcohol dehydrogenase polymorphism in populations of Drosophila melanogaster. II. Relation between ADH activity and adult mortality

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Abstract
Eight Drosophila melanogaster strains, seven homozygous for Adh F alleles and one for an Adh-null mutant, were compared for ADH activity in males and adult mortality on ethanol-supplemented food. The strains differed considerably in these qualities. A positive correlation was found between ADH activity and ld 50. The relevance of this finding is discussed in relation to the differential selection acting on Adh genotypes kept on ethanol-supplemented food.