Heterozygotes are WT and segregate WT, Lon and Uncs. If raised at 25C, the Uncs are Mup -> 3-fold/L1 arrest. If raised at 15C the Uncs are fertile (reduced brood).

Temperature sensitive. Maintain at 15C. At 25C the animals will arrest at 3-fold/L1 stage. Unc.

Temperature sensitive. At 15C the animals are essentially WT, but with a reduced brood; males mate well. Embryos raised at 25C will result in 3-fold/L1 arrest (Mup). Larval shift to 25C will result in sterile hermaphrodites but males that are fertile.