Question

If the cross over frequency of genes A, B and C are as given, between A and B = 10%, between B and C = 5%, between A and C = 5.5%, the sequence of genes on the chromosome would be ______.

Options

• ABC

• ACB

• CAB

• BAC

Answer 1

If the cross over frequency of genes A, B and C are as given, between A and B = 10%, between B and C = 5%, between A and C = 5.5%, the sequence of genes on the chromosome would be ACB.

Explanation:

The A–C distance is about 5.5%, while C–B is 5%; together these are close to the A–B distance of 10%. Thus, C lies between A and B: A–C–B.