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Enzyme Null Alleles in Natural Populations of Drosophila melanogaster: Frequencies in a North Carolina Population

Robert A. Voelker, Charles H. Langley, Andrew J. Leigh Brown, Seido Ohnishi, Barbara Dickson, Elizabeth Montgomery and Sandra C. Smith
Proceedings of the National Academy of Sciences of the United States of America
Vol. 77, No. 2, [Part 2: Biological Sciences] (Feb., 1980), pp. 1091-1095
Stable URL: http://www.jstor.org/stable/8387
Page Count: 5
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Enzyme Null Alleles in Natural Populations of Drosophila melanogaster: Frequencies in a North Carolina Population
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Abstract

A Raleigh, NC, population of Drosophila melanogaster was sampled for the presence of enzyme null alleles at 25 loci. No nulls were found at any of five X-linked loci. Nulls were recovered at 13 of 20 autosomal loci; the weighted mean frequency for all 20 autosomal loci was estimated to be 0.0025. A consideration of the effects of these null alleles on viability strongly suggests that, although they may contribute to so-called polygenic variation, they are not representative of the entire genome.

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