Question: Two dominant mutants in the first linkage group of the guinea pig govern the traits pollex (pX0, which is the ativistic return of thumb and little toe, and rough fur (P). When dihybrid pollex, rough pigs (with identical linkage relationships) were crossed to normal pigs, their progeny fell into 4 phenotypes: 79 rough, 103 normal, 95 rough pollex, and 75 pollex.
a) determine the genotypes of the parents
b) calculate the amount of recombination between Px and R