Pick wild-type GFP+ to maintain. 3xFlag tag inserted into endogenous fbf-2 locus with engineered (H453A H454A E457A Y479A) substitutions. Heterozygotes are WT with relatively dim pharyngeal GFP signal, and segregate WT dim GFP+ (heterozygotes), Dpy bright GFP+ (mIn1 homozygotes), and non-GFP fbf-1 fbf-2 homozygotes (Sterile). Pick WT dim GFP and check for correct segregation of progeny to maintain.