Heterozygotes are WT and segregate WT, Uncs which give only dead eggs, and dead eggs. mbk-2(pk1427) is a deletion that removes most of the mbk-2 locus.

ddEx16 [pgl-1::TY1::EGFP::3xFLAG(92C12) + Cbr-unc-119(+)]. Maintain at 25C to retain transgene expression. Heterozygotes are Unc and segregate Uncs, dead eggs and WT. Reference: Wang JT, et al. eLife 2014;3:e04591.