mNeonGreen tag inserted into C-terminus of endogenous mev-1 locus. Animals are slow growing with reduced brood size. Insertion verified by PCR. Left flanking sequence: 5' TATCCAGACAAACCATAGGACT 3' ; Right flanking sequence: 5' GCCGAACGAGATTAGACCTAT 3'. sgRNA: 5' CAAGAGCAACAAGACTGCCT 3'.