If the interference value is 1, then what is the probability of recombination between genes A and B if: 1. There is a recombination between genes B and C, where the gene order is A-B-C; 2. The recombination fraction between A and B is 0.05; 3. The recombination fraction between B and C is 0.45?

A. 0.45.

B. 0.05.

C. 1.00.

D. 0.15.

E. 0.0.

E. 0.0.

Explanation:

The measure of crossing over coincidence interrelatedness between one cross over and another in a given pair of chromosome is known as what is called Interference.

Given that:

the interference value = 1

The probability of recombination between genes A and B is zero i. e 0.0 because:

when another gene co-occur with a particular gene during cross over, the coefficient of coincidence decreases. We know that the interference is maximum at 1, we can say it ranges from 0-1; now that two recombination is taking place in two genes, the probability is likely to decrease from 1 to 0.0

Similarly; Since the probability of recombination is taking place between two genes i. e genes A and B. Then there is no probability of double crossover when interference value = 1 but when it is zero there is probability of double crossover to occur. With that being said, the probability of recombination between genes A and B is 0.0