Problem: To determine whether the mutations in the seven strains leading to the wingless phenotype are in the same gene, your lab sets up complementation tests. You obtain the following results ("+" indicates that complementation was observed; "-" indicates that no complementation was observed).   mutation      1      2      3      4     5      6      7   1   -2   -   -3  +   +   -4  -   -   +   -5  +   +   -  +   -6  +   +   -  +   -   -7   -   -   +  -   +  +  -How many different genes are contributing to the wingless phenotypes in these mutant fly strains?

FREE Expert Solution

Recall: Mutants in the same complementation group do not complement each other (negative result)

: Mutants in different complementation groups complement each other (positive result)