Question

The recombination frequency between gene B and gene C is 11%. The recombination frequency between gene B and gene D is 5%. The recombination frequency between gene C and gene D is 15%. What would be the arrangement of these genes on a linkage map?

A) CDB
B) DBC
C) BCD
D) More information is needed.

Answer 1

The arrangement of the genes on the linkage map would be CBD. The correct option is A.

Step-by-step explanation:

The arrangement of these genes on a linkage map can be determined by comparing the recombination frequencies between the genes. The gene with the highest recombination frequency should be placed between the other two genes.

Based on the given information, the recombination frequency between gene B and gene C is 11%, which is higher than the recombination frequency between gene B and gene D (5%). Therefore, gene C should be placed in the middle, with gene B on one side and gene D on the other side. So, the arrangement of the genes on a linkage map would be CBD. Hence, A is the correct option.