dbl-1 null mutants showed temperature-dependent phenotypes. (A) The 2-day-old dbl-1(nu3) mutants grown at different temperatures show different body lengths; they are longest at 15° and shortest at 25°. (B) Quantification of the difference in body lengths. More than 20 mutants were used for each sample and the experiments were repeated three times. P < 0.001 by one-way ANOVA.