Enzyme null alleles in natural populations of Drosophila melanogaster: frequencies in a North Carolina population

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...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 1980-02, Vol.77 (2), p.1091-1095
Main Authors: Voelker, Robert A., Langley, Charles H., Andrew J. Leigh Brown, Ohnishi, Seido, Dickson, Barbara, Montgomery, Elizabeth, Smith, Sandra C.
Format: Article
Language:English
Subjects:
Alleles
Biological Sciences: Genetics
Chromosomes
Dehydrogenases
Drosophila
Enzymes
Evolutionary genetics
Genetic loci
Homozygotes
Population genetics
Viability
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Summary: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.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.77.2.1091