Question

In fruit flies, a specific gene mutation causes the wings to become malformed. These wings are called vestigial because they do not function properly. The mutated allele for vestigial wings (v) is recessive to the allele for functioning wings (V). Two fruit flies that are heterozygous for wing shape are crossed, resulting in many offspring.
Which of the following would most likely describe the population of offspring?

Answer 1

Answer: 25% are homozygous with the dominant gene (VV), 25% are homozygous with the recessive gene (vv), and 50% are heterozygous (Vv). Only the flies with vv will display the trait.