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Science 28 February 1969:
Vol. 163. no. 3870, pp. 943 - 944
DOI: 10.1126/science.163.3870.943
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Articles

Esterase Heterogeneity: Dynamics of a Polymorphism

Richard K. Koehn 1

1 Department of Zoology, University of Kansas, Lawrence 66044

In the freshwater fish Catostomus clarkii, the frequency of alleles for polymorphic serum esterase varies with latitude. The activity of the allele more frequent in southern populations increases as temperature increases from 0 ° to 37 °C, whereas activity of the allele more frequent in northern populations increases as temperature decreases. Coefficients of selection used to calculate allelic equilibrium within populations are derived from the activity profiles of the genotypes.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Enzyme Polymorphism and Metabolism.
G. B. Johnson (1974)
Science 184, 28-37
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Genetic Variation in a Gradient of Environmental Variability: Marine Bivalvia (Mollusca).
J. Levinton (1973)
Science 180, 75-76
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Genetic Polymorphisms in Varied Environments.
J. R. Powell (1971)
Science 174, 1035-1036
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Science. ISSN 0036-8075 (print), 1095-9203 (online)