Heterozygotes are weak Muv and segregate weak Muv, Muv Twitchers, and Dpy Vuls whose progeny are larval lethal. sy100 is a dominant negative allele of let-60. n1046 is a gain-of-function allele of let-60. Do not distribute this strain; other labs should request it from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.

Heterozygotes are non-Dpy Vul and segregate non-Dpy Vul, DpyVul whose progeny are dead, and dead eggs. sy100 is dominant Vul and recessive Lethal with maternal rescue: homozygotes from heterozygous mothers grow to adulthood and become a bag of dead larvae. sy100 is not 100% penetrant. Do not distribute this strain; other labs should request it from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.