You have isolated two C. elegans mutants that display the uncoordinated (unc) phenotype. You do crosses to establish that each unc mutant (unc1 and unc2) are recessive to wild type (coordinated) and establish true-breeding lines. You cross unc1 and unc2 together and the F1 are all wild type for coordination. You then allow a single F1 to self (C. elegans are hermaphrodites) and see 91:69 coordinated:uncoordinated progeny in the F2. This suggests that unc1 and unc2 interact through:
A) Complementary gene action B) Recessive epistasis C) Recessive suppression D) Duplicate gene action E) None of the Above
