Detection of a null allele for MDH isozymes in the guppy (Poecilia reticulata), with special reference to sex-linked inheritance |
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Authors: | Y Fujio J M Macaranas |
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Institution: | Department of Fishery Science, Faculty of Agriculture, Tohoku University, Sendai. |
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Abstract: | Malate dehydrogenase (MDH) was examined by starch gel electrophoresis for strain differences in the guppy, Poecilia reticulata. The electrophoretic patterns revealed duplicate gene loci encoding a mitochondrial form of MDH and the existence of a null allele at one of the duplicate loci. Different phenotypic frequencies at Mdh-4 were observed among 9 strains and between males and females within each strain. The progeny tests for Mdh-4 variants in the inter-strain crosses indicated a mode of partial sex-linked inheritance. |
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