Question

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

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

Answer 1

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

A.Genes far apart on the same chromosome show very few recombinations – False, because genes far apart on the same chromosome shows less linkage, more recombinations.

B.Genes loosely linked in the same chromosomes shows similar recombinations as tightly linked genes – False, because Genes loosely linked in the same chromosomes shows different recombinations as tightly linked genes

C.Tightly linked genes on the same chromosome show very few recombinations – True.

D.Tightly linked genes on the same chromosome show higher recombinations – False, because tightly linked genes less crossing over, less recombinations.

So, the correct option is ‘Tightly linked genes on the same chromosome show very few recombinations.