POPULATION GENETICS OF MARINE PELECYPODS. III. EPISTASIS BETWEEN FUNCTIONALLY RELATED ISOENZYMES OF MYTILUS EDULIS

1 Department of Ecology, State University of New York, Stony Brook, New York 11790
2 Department of Evolution, State University of New York, Stony Brook, New York 11790

The distribution of interlocus genotypic combinations was examined in Mytilus edulis for interdependence between two loci synthesizing functionally related isoenzymes. There is significant dependence between the Leucine Aminopeptidase and Aminopeptidase loci, which we attribute to epistasis, since the magnitude of dependency varies with age. Furthermore, dependency varies in magnitude with position in the intertidal zone from which samples were taken, suggesting that epistasis is a function of the combination of certain non-homologous alleles as well as of the environmental circumstance in which the combinations occur.

Submitted on April 5, 1972
Revised on October 26, 1972




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