Question

The recombination frequency between gene A and gene B is 8.4%, the recombination frequency between gene A and gene C is 6.8%, and the recombination frequency between gene B and gene C is 15.2%. Which is the correct arrangement of these genes?

a.ABC
b.CAB
c.ACB
d.CBA
e.BCA

Answer 1

The correct arrangement of genes A, B, and C is CAB. So, the correct answer is option b.

Step-by-step explanation:

The correct arrangement of genes A, B, and C is CAB.

The recombination frequency between gene A and gene B is 8.4%, which means they are farther apart. The recombination frequency between gene B and gene C is 15.2%, indicating that they are also farther apart. The recombination frequency between gene A and gene C is 6.8%, which suggests they are closer together.

Based on the recombination frequencies, we can determine the order of the genes. The gene that has a higher recombination frequency with both A and B should be in the middle. Since gene B has a higher recombination frequency with both A and C, it must be in the middle. Therefore, the correct arrangement is CAB.

So, the correct answer is option b.