While working with a series of yeast loss of function mutants, you perform a complementation test by mating each haploid yeast mutant with every other (mutants are labeled A-E) as well as mating them with wild-type (WT) haploid. The results of testing the resulting diploids are as follows: a plus mark indicates there was complementation, and a minus mark means there was no complementation.
The mutant that stands out as unusual is mutant
The other four mutants fall into two complementation groups. Listed alphabetically, they are
The purpose of mating the mutants to the wild-type is to allow you to determine if the mutants are
The unusual mutant in the first dropdown would be best described as