Question

Which of the following statements is true? a. Recombination of the body color and red/cinnabar eye alleles will occur more frequently than recombination of the alleles for wing length and aristae length. b. Recombination of the body color and aristae length alleles will occur more frequently than recombination of red/brown eye alleles and the aristae length alleles. c. Recombination of the gray/black body color and long/short aristae alleles will not occur. d. Recombination of the red/brown eye and long/short aristae alleles will occur more frequently than recombination of the alleles for wing length and body color.

Short answer

The correct option is (d).

Step-by-step solution

Step1.

Recombination frequency isthe frequency of single chromosomal crossover between two genes during meiosis.

Frequent recombination can occur between distantly located genes while the same frequency is less for nearly located genes.

Step 2.

The red/brown eye and long/short aristae alleles are situated far away from each other so there will be occurrence frequent recombination.

while the wing length and body color allelles situated nearer to each other so there will be less frequent recombination.