How would one explain a testcross involving F1 dihybrid flies in which more parental-type offspring than recombinant-type offspring are produced?
A) The two genes are closely linked on the same chromosome.
B) The two genes are linked but on different chromosomes.
C) Recombination did not occur in the cell during meiosis.
D) Both of the characters are controlled by more than one gene.

Question

Quizplus · Accepted Answer

If the two genes are closely linked on the same chromosome, they are less likely to undergo recombination, resulting in more parental-type offspring than recombinant-type offspring in a testcross.

How Would One Explain a Testcross Involving F1 Dihybrid Flies