Figure 3.

The dpy-18 and phy-2 phenotypes. (A–D) Nomarski differential interference contrast images, lateral view; (A–C) young adult hermaphrodites that have not begun to lay embryos. All three animals shown at same magnification. (A) Wild type; (B) dpy-18(ok162) homozygote; and (C) phy-2(ok177) homozygote. (D) Dead embryos from dpy-18(ok162)/+; phy-2(ok177)/unc-22(e66) parent. From left to right: twofold embryo, embryo starting to explode, and embryo after explosion. (E) Quantitation of self-progeny produced by dpy-18(ok162)/+; phy-2(ok177)/unc-22(e66) parents. T°C, temperature. Dpy Unc progeny are of genotype dpy-18; unc-22; Dpy non-Unc progeny were not observed; total dead progeny (dead) include larval lethal and embryonic lethal progeny. The wild-type and Unc classes of progeny (omitted from Table 1) were progeny-tested to determine genotype, and it was found that each genotype was present at the expected percentage.