Assume That a Mutation Occurs in the Gene Responsible for the Production

Multiple Choice

Assume that a mutation occurs in the gene responsible for the production of hexosaminidase A,such that only about 50% of the enzyme activity is found in the heterozygote compared with a homozygous normal individual.If heterozygotes are phenotypically normal,we would say that the mutant allele is ________to its normal allele.

A) gain of function
B) epistatic
C) recessive
D) auxotrophic
E) dominant