Question

Mutations in Drosophila and other organisms are usually deleterious. One experimenter put 200 flies, 100 of them homozygous for the recessive gene ca (claret eye) and the remainder homozygous for b (dark body) in a breeding cage. After 60 days a sample from the population showed that the double mutants ca ca bb constituted 65% of the population. Construct an inference, and experimental tests for your inference, to account for the results of this experiment.

Inference -

Experimental tests -

Answer 1