In maize (corn), assume that the genes A and B are linked and 30 map units apart. If a plant of Ab/aB is selfed, what proportion of the progeny would be expected to be of ab/ab genotype?
A) 2.25%
B) 15%
C) 9%
D) 30%
E) 4.5%

Question

Quizplus · Accepted Answer

The correct answer is A because the genes A and B are linked and 30 map units apart. This means that the probability of a crossover event between the two genes is 30%. Therefore, the probability of obtaining an ab/ab genotype from a selfed Ab/aB plant is 0.3 * 0.3 = 0.09 or 9%.

In Maize (Corn), Assume That the Genes a and B