Temperature sensitive, semidominant mutant that is Unc when moving backward. Dorsal muscular contraction is stronger than that of ventral, resulting in an asymmetric pattern of locomotion in which the animal either forms a dorsal coil or moves in circles with the dorsal side central to the circle. Most likely a gain of function allele of sup-1.

Recessive suppressor of unc-123(jd5). Exhibits a subtle dorsal asymmetric locomotory defect as a homozygote when grown at 25C. Dominant suppressor of unc-17(e245). Most likely unc-123 is allelic with sup-1.

Slow pumping. vu227 is the allele that is actually present in strains DA1316 and DA1370, not ad1051. For those working with DA1316 and DA1370 it may be useful to have an avr-15(vu227) single mutant for comparison. Reference: Dent et al., 2000, Proc. Nat. Acad. Sci. 97(6): 2674-2679.