Abstract
Inheritance of 15 polymorphic isozymes was investigated in captive Microtus californicus. Eleven of the isozymes show patterns consistent with a Mendelian model of inheritance: glycerol-3-phosphate dehydrogenase (GPD), lactate dehydrogenases A and B (LDH-A and LDH-B), malic enzyme 2 (ME-2), isocitrate dehydrogenase 1 (ICD-1), phosphogluconate dehydrogenase (PGD), glutamate-oxaloacetate transaminase 1 (GOT-1) phosphoglucomutase 2 (PGM-2), leucine aminopeptidase (LAP), glucosephosphate isomerase (GPI), and esterase 2 (ES-2, from kidney). Four of the isozymes show patterns that cannot be interpreted by a simple genetic model: esterases 1 and 4 (ES-1, ES-4, from hemolysate), esterase 3 (ES-3, from plasma), and protein 1 (PT-1). The following pairs of loci are assorting independently: LAP and PGD, LAP and PGM-2, GOT-1 and PGD, GOT-1 and GPD, LAP and GPD, GPD and PGD, GPI and PGD. Data from one test cross mating indicate that GPD and PGM-2 are loosely linked with recombination about 30%. Additional data are needed to confirm this relationship.
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