Purebreeding boa constrictors that are tan colored with a normal color pattern are mated to purebreeding boa contrictors that are orange colored with a swirl color pattern. All of the offspring have tan with a normal color pattern. If an F1 individual is crossed to a pure breeding orange swirl pattern individual what proportion of their offspring should be orange with a normal color pattern, assuming that the two loci are controlled by automsomal loci that assort independently?
B) < ¼
E) all of them