ehn-1 is an uncloned gene that enables HND-1 function in larval viability and gonadogenesis; ehn-1(q690) homozygotes have mild defects in gonadogenesis and viability, but double homozygotes also carrying enh-3(q689) are strongly enhanced in the gonad defect, while those carrying hnd-1(q740) are strongly enhanced in both defects; ehn-1(q690) homozygotes have normal expression of HND-1, consistent with the hypothesis that hnd-1 and ehn-1 act in parallel.