The ser-1;ser-7 double mutant did not show stronger Fluoxetine resistance than the ser-7 single mutant, as measured after 40 min and 24 hr of exposure to fluoxetine.
mod-1(ok103) enhanced the male turning defects in ser-1(ok345) animals, hence mod-1;ser-1 mutant males performed fewer good turns compared with ser-1 alone. Mod-1 males do not have a turning defect on their own.