Heterozygotes are WT and segregate WT, DpyUncs and L1 lethals. js124 homozygotes arrest as L1 larvae that are very uncoordinated and tend to adopt a coiled position. js124 molecular lesion is an amber mutation at codon 50.

Temperature sensitive. Unc-difficulty in crawling backwards. Behavior phenotype more pronounced at 25C than at 16C or 20C. Trichlorfon resistant. This strain replaced strain DH401 because Mike Nonet tested DH401 and found it didn't contain cha-1, but did have an unc-11 mutation (5/97).

syEx475 [myo-3p::unc-68(see following comments) + myo-2p::GFP + pUC-19]. Pick GFP+ animals to maintain. myo-3p::unc-68 transgene was produced by injecting pEM23 (myo-3 promoter + unc-68 exons 1-8) + 18 kb unc-86 PCR fragment (start codon through nucleotide 18090) + pLM511 (unc-68 position 11989 to the end); fragments were recombined in vivo.