Suppose two genes a and b are 7.4 map units from each other, and that genes b and c are 5.7 map units from each other. You do a cross to determine the map distance between a and c. Which result would indicate that c lies between a and b?

Question

Quizplus · Accepted Answer

If gene c lies between a and b, the distance between a and c would be less than the sum of the distances from a to b and b to c, which is 7.4 + 5.7 = 13.1 map units. The only option less than 13.1 is 2.0 map units, indicating c is between a and b.

Suppose Two Genes a and B Are 7