Abstract
The inheritance of red blood cell levels of carbonic anhydrase isozymes (CA I and CA II) has been studied in different carbonic anhydrase I genotypes of the pig-tailed macaque, Macaca nemestrina. Quantitation of CA I isozymes in a series of animals indicates that the total CA I concentration is the sum of the average effects of each CA I structural allele and that the average effects are independent of the various allelic combinations. The relative average effects were 0.32:0.95:1.0 for the CA I a, CA Ib, and CA I c structural genes, respectively. It is also demonstrated that the level of CA II is related to the CA I genotypes. Multiple regression analysis demonstrated that each dose of CA I-deficiency gene present decreased the CA II concentration by approximately 30%, with this decrease in CA II level being solely related to the dose of CA I-deficiency gene and not to the level of CA I. The CA I-deficient animals produce CA I products that are similar to the common CA Ia, CA Ib, CA Ic electrophoretic types. Limited mating data indicate that the CA I components in CA I-deficient animals are inherited codominantly.
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