Heterozygotes are WT and segregate WT, Dpy Steriles and dead eggs. cbp-1 is embyronic lethal. ys4 is an N-terminal deletion in cbp-1. NOTE: THIS STRAIN WAS FORMERLY IDENTIFIED AS HA990 cbp-1(ys4) dpy-18(e364)/qC1 dpy-19(e1259) glp-1(q339) III. The strain name and allele were corrected per Anne Hart, 2010.