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

• A. A, B, C
• B. A, C, B
• C. B, C, A
• D. B, A, C

Answer 1

The correct option is D B, A, C

Distance between A and B is 3 units. Between B and C is 10 units. Between C and A is 7 units. So it can be marked as :
B A C
|------------|-------------------------|
3 Units 7 units