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Isozyme variability in species of the genusDrosophila. VII. Genotype-environment relationships in populations ofD. melanogasterfrom the eastern United States

✍ Scribed by F. M. Johnson; H. E. Schaffer

Publisher: Springer
Year: 1973
Tongue: English
Weight: 683 KB
Volume: 10
Category: Article
ISSN: 0006-2928
DOI: 10.1007/bf00485762

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✦ Synopsis

Collections of D. melanogaster were analyzed for genetic variation at nine enzyme loci. Allelic .frequencies were determined, and comparisons between observed phenotypic proportions and those expected under equilibrium conditions were made. A significant tendency toward homozygote excess was noted. Relationships between patterns of genetic variability and between patterns of genetic and environmental variability were examined by the method of principal components and correlation analysis. Several of the loci showed a clinal pattern in gene frequencies, and overall there was an appreciable amount of geneticgenetic and genetic-environmental association.

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