Assume That for a Given Gene a Mutation Creates an Allele

Multiple Choice

Assume that for a given gene a mutation creates an allele that functions as a dominant negative.The gene codes for a protein that forms a trimer within the cell.If at least one of the subunits has the mutant structure the entire protein is inactivated.For a heterozygous individual,what percent of the trimers present in the cell will be inactive?

A) 100%
B) 25%
C) 50%
D) 6.25%
E) 12.5%