While working in a genetics lab over the summer you isolated

While working in a genetics lab over the summer, you isolated a true-breeding strain of wingless Drosophila. After sharing your results with your mentor, you learn that six other true-breeding strains of Drosophila with the same mutant phenotype have been isolated independently in your lab. 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). Which mutants are in the same complementation group as mutant strain #1? Select all that apply. a. mutant #2 b. mutant #3 c. mutant #4 d. mutant #5 e. mutant #6 f. mutant #7

Solution

Answer: a. mutant #2; c. mutant# 4; f. mutant# 7

Explanation: Complementation is the relationship between two strains of an organism having homozygous recessive mutations that produce the same mutant phenotype.

Displaying the same phenotype indicates that the mutations can be in the same gene.