Abstract
Gene frequency variation at eight polymorphic allozyme loci in Drosophila melanogaster populations in North Carolina and the east coast of the United States were analyzed utilizing the variance component estimation procedures suggested by Cockerham (1969, 1973). These variance components were used to estimate correlations of genes within small geographic regions. The average (over loci) correlation between genes in the same individual within subpopulations was estimated to be 0.033. That between genes in the same subpopulation in different individuals was estimated to be very small, although significantly different from zero. The macrogeographic variation measured by the correlation of genes sampled from the same local region was large for some loci and smaller for others. This variation was also analyzed by correlation with latitude and longitude. Several previously recognized clines were identified as were several new clines.—These results were interpreted as indicating either some degree of nonrandom mating and local breeding unit isolation or a low frequency of null alleles. The geographic and temporal variation has no simple interpretation.
Full Text
The Full Text of this article is available as a PDF (926.2 KB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Gillespie J. H., Langley C. H. A general model to account for enzyme variation in natural populations. Genetics. 1974 Apr;76(4):837–848. doi: 10.1093/genetics/76.4.837. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hiraizumi Y, Crow J F. Heterozygous Effects on Viability, Fertility, Rate of Development, and Longevity of Drosophila Chromosomes That Are Lethal When Homozygous. Genetics. 1960 Aug;45(8):1071–1083. doi: 10.1093/genetics/45.8.1071. [DOI] [PMC free article] [PubMed] [Google Scholar]