Question

In the given diagram what is the frequency of recombination between AB gene?

• A. $50\%$
• B. $30\%$
• C. $15\%$
• D. $10\%$

Answer 1

The correct option is D $10\%$

Recombination frequency (genetic distance) is determined by the frequency of the recombination events between the two genes in meiosis. The greater the physical distance between the two genes, the more likely are they to recombine during any given meiosis event. The genetic distance between genes A and B is,

$30cM-20cM=10cM$

It means, the recombination frequency is 10%.

So the correct answer is option D.