Superficially wild-type. CRISPR/Cas9-engineered mir-4813 seed mutant: ttcaatat to tGCGCat (introduced FspA1 cutting site) and inserted additional PAM mutation in the upstream region.

lucEx421 [mir-4813p::myr::GFP::unc-54 3’UTR + ttx-3p::mCherry]. Pick mCherry+ animals to maintain. Reporter contains 1kb upstream mir-4813 promoter sequence and 1kb unc-54 3’UTR downstream sequence. Provides a marker for pharyngeal muscle cell-cell fusion. Reference: Gutie?rrez-Pérez, P. et al. A deeply conserved miR-1 dependent regulon supports muscle cell physiology. bioRxiv, 2020, doi.org/10.1101/2020.08.31.275644.