Figure 5.

Variability in fertility of cec-6Δ animals. (A) Brood size per animal for worms of indicated genotypes. The distribution of the cec-6Δ animals is shifted relative to the N2 and cec-1Δ animals (Wilcoxon rank-sum test, one-sided). The distributions of N2 and cec-1Δ brood sizes were not significantly different. (B) Brood size per animal after outcrossing to N2 as indicated in the scheme. Differences in distributions were not significant (Wilcoxon rank-sum test, two-sided). (C) Stereoscope images of growth plates 6 days after six L1 worms were plated. Images represent lines at various stages of population fertility. When lines became sterile, most animals had a dark appearance with a clear area where embryos are normally located (Capowski et al. 1991; Katz et al. 2009) (right panel). Bar, 0.5 mm.