Genetics: Analysis and Principles 5th Edition by Robert Brooker

Exercise 2

Two genes are located on the same chromosome and are known to be 12 mu apart. An AABB individual was crossed to an aabb individual to produce AaBb offspring. The AaBb offspring were then crossed to aabb individuals
a. If this cross produces 1000 offspring, what are the predicted numbers of offspring with each of the four genotypes: AaBb , Aabb , aaBb , and aabb
B. What would be the predicted numbers of offspring with these four genotypes if the parental generation had been AAbb and aaBB instead of AABB and aabb