Whereas both
mtm-1 RNAi and
mig-2(
mu28) result in abnormal gonad morphology as a result of defects in distal tip cell migration, the
mig-2(
mu28) mutant phenotype is more severe (more penetrant).
mtm-1 RNAi in the
mig-2(
mu28) mutant background results in a phenotype indistinguishable from
mig-2(
mu28) suggesting maximal epistasis.