Question

Select the correct statement from the ones given below with respect to dihybrid cross.

• A. Tightly linked genes on the same chromosomes show higher recombinations
• B. Genes far apart on the same chromosomes show very few recombinations
• C. Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones
• D. Tightly linked genes on the same chromosome show very few recombinations

Answer 1

The correct option is D Tightly linked genes on the same chromosome show very few recombinations

The frequency of crossover is directly proportional to the distance between two genes. Hence the higher the recombination frequency the greater is the distance between the two genes. Genes that are present on the same chromosome and are tightly linked show very little recombinations as they are linked genes.

Hence the correct answer is (D)