The middle gene of a three gene mapping experiment can be determined by examining the genotypes of which of the following?
A) offspring that resemble the parents
B) offspring that exhibit a single crossover event
C) offspring that exhibit double crossover events
D) None of these choices are correct.

Question

Quizplus · Accepted Answer

Double crossover events that occur between the two end genes and the middle gene will allow for the determination of the order of the three genes. The middle gene will be the one that exhibits the double crossover event. Offspring that resemble the parents or exhibit a single crossover event do not provide enough information to determine the middle gene.

The Middle Gene of a Three Gene Mapping Experiment Can