TETRAZOLIUM OXIDASE POLYMORPHISM IN RAINBOW TROUT

1 Departments of Medicine and Genetics, University of Washington, Seattle, Washington

Tetrazolium oxidase from the blood and liver of rainbow trout was found to be genetically polymorphic. The inheritance pattern of the liver enzyme was compatible only with a one locus-two allele hypothesis. The enzymes in the blood while having an electrophoretically identical polymorphism could differ genotypically from that of the liver in a given fish. The significance of these findings to the understanding of the evolution of the salmonid genome is discussed.

Submitted on May 15, 1972