Question

Distance between the genes and the percentage of recombination shows

• A. A direct relationship
• B. An inverse relationship
• C. A parallel relationship
• D. No relationship

Answer 1

Answer: (B)

An inverse relationship

Linkage is the phenomenon of physical association of genes on a chromosome and recombination is the generation of non-parental gene combinations. Strength of the linkage between two genes is inversely proportional to the, distance between the two, i.e., two linked genes show higher frequency of crossing over (recombination) if the distance between them is higher and lower frequency if the distance is small. But distance between gene has a direct relationship with percentage of recombination because with increase in distance between genes percentage of recombination increases.

So, the correct answer is 'A direct relationship'.