Essential Genetics 6th Edition by Daniel Hartl

Exercise 16

In corn, the genes v (virescent seedlings), pr (red aleurone), and bm (brown midrib) are all on chromosome 5, but not necessarily in the order given. The cross


(a) Determine the gene order, the recombination frequencies between adjacent genes, the coefficient of coincidence, and the interference.
(b) Explain why, in this example, the recombination frequencies are not good estimates of map distance.