The inheritance of enzyme variants for tyrosine aminotransferase, NADP dependent malate dehydrogenase, NADP dependent isocitrate dehydrogenase, and tetrazolium oxidase in Tetrahymena pyriformis, syngen 1

The isozymic patterns of tyrosine aminotransferase, NADP malate dehydrogenase, NADP isocitrate dehydrogenase, and tetrazolium oxidase were examined by starch gel electrophoresis in Tetrahymena pyriformis, syngen 1. The genetics of the alleles controlling these enzymes was studied through a breeding program. Each enzyme locus was shown to assort vegetatively, as do other loci in this organism. A detailed analysis of the assortment process for the tyrosine aminotransferase locus indicated that the rate of stabilization of heterozygotes into pure types was essentially identical to previously reported rates for other loci.