Principle Of Inheritance And Variation Question 119

Question: The map distance between genes A and B is 3 units, between B and C 10 units and between C and A 7 units. The order of the genes in a linkage map constructed on the above data would perhaps be [CMC Vellore 1994]

Options:

A) A, B, C

B) A, C, B

C) B, C, A

D) B, A, C

Show Answer

Answer:

Correct Answer: D

Solution:

From the recombination frequencies between different genes A, B and C, it is clear that distance between A and B genes is 3 units, between B and C 10 units and C and A 7 units.

Hence linear order of genes on chromosomes is: