Table 2 . mat mutants are enhanced by emb-1 at the permissive temperature.

Genotype	N	Phenotype @ 15°
emb-27(ax81ts) unc-4; emb-1(hc62ts) lon-1	9	Pvl Ste
rol-6 mat-2(or170ts); emb-1(hc62ts) unc-32	21	One-cell progeny
dpy-10 mat-2(ax102ts); emb-1(hc62ts) unc-32	25	Unh MC (22) or Ste (3)
mat-3(or180ts) dpy-1 emb-1(hc62ts) unc-32	10	Ste
fzy-1(h1983) dpy-10; emb-1(hc62ts) unc-32	36	Unh MC (34) or Ste (2)

Double mutants of emb-1 with mat and fzy-1 reduction-of-function alleles. Mothers were identified on the basis of their linked morphological markers. The generation of these double mutants was carried out at 15°. The phenotype indicated is for the mother (Ste, Pvl) or the progeny (MC unh) of the doubly mutant mother. Ste, sterile; Pvl, protruding vulva; unh MC, unhatched multicellular embryos. All single mutant control animals were not Ste, Pvl, nor did they produce a significant number of unhatched embryos at 15°. N = number of adult mothers examined.