If the map distance between genes A and B is 10 map units and the map distance between genes B and C is 25 map units, what is the map distance between genes A and C?
A)15 map units
B)35 map units
C)either 15 map units or 35 map units, depending on the order of the genes
D)The map distance between A and C can not be predicted from these data.

Question

Quizplus · Accepted Answer

The map distance between A and C can be either 15 or 35 map units, depending on the order of the genes on the chromosome. If A-B-C, then it's 35 map units; if C-B-A, then it's 15 map units.

If the Map Distance Between Genes a and B Is