The fruit fly cross shown here analyzes the transmission of two genes in the X chromosome. The male parent has mutant alleles for both the white gene (w^-) and the crossveinless gene (cv^-). The female parent has nonmutant forms of these genes (w⁺ and cw⁺). A cross between siblings of the F₁generation-a red-eyed, crossveined female and a red-eyed, crossveined male-generates F₂ progeny. Examine the genotype of the F₂ male progeny. Notice that the progeny fall into two groups. Refer to the figure below when answering the following question. The group that represents a small proportion of the progeny, deriving from maternal gametes containing combinations of alleles not found in either X chromosome of the mother, is called the _____ group.

Question

Quizplus · Accepted Answer

The group that represents a small proportion of the progeny deriving from maternal gametes containing combinations of alleles not found in either X chromosome of the mother is called the recombinant group. This is because the progeny contain a combination of alleles from both parents due to crossing over and recombination during meiosis.

The Fruit Fly Cross Shown Here Analyzes the Transmission of Two