Table 4. Overview of C. briggsae egg-laying defective mutants.

					Egl Penetrance (%)
Class	Features	Gene	Alleles	Mutation	Non-Egl	Semi-Egl	Egl	n
1	Wild-type vulva	egl(bh2)a	2	bh2	0	69	31	103
		egl(bh21)	1	bh21	0	41	59	120
		egl(sy5395)	1	sy5395	6	32	62	244
2	Fewer Pn.p cells	unc(sy5505)	1	sy5505	22	17	61	127
		Cbr-unc-84	1	sy5506	56	21	23	100
3	Reduced VPC induction	lin(bh7)	1	bh7	81	12	7	137
		lin(bh14)	1	bh14	39	32	29	133
		Cbr-lin-39	2	bh20	0	4	96	140
				bh23	0	0	100	41
4	Abnormal vulval invagination	Cbr-lin-11	2	sy5336	0	0	100	100
				sy5368	0	0	100	100
		lin(bh13)#	2	bh13	1	1	98	102
		lin(bh26)	1	bh26	0	0	100	100
		lin(bh25)	1	bh25	1	23	76	105
		lin(sy5425)	1	sy5425	36	25	39	104
−	Unclassified	lin(sy5212)	−	sy5212	0	0	100	49
		lin(sy5426)	−	sy5426	0	0	100	29

Egl, animals did not lay eggs at all; n: number of animals scored; Non-Egl, animals continued to lay eggs throughout their reproductive life; Semi-Egl, animals laid eggs initially but became Egl afterward.

^aThe phenotype of the other allele of this locus was not characterized in detail.