Question

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

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

Answer 1

The correct option is B Tightly linked genes on the same chromosome show very few recombination.

The closely located genes show the tendency of linkage and they are transmitted together to the next generation. If two closely located genes show linkage, they do not show cross over and result in very few recombination. The greater is the distance between the genes, the higher is the recombination frequency. So, the correct answer is 'Tightly linked genes on the same chromosome show very few recombination'.