TABLE 2.

Suppressor phenotypes in the absence of mdf-1(gk2)

Genotypes	Class	Phenotypes
h1959ts	Recessive	Viable at 20°, some embryonic arrest and mild Him; lethal at 25°, 100% embryonic arrest.
h1962ts	Recessive	Viable at 20°, majority of brood consists of unfertilized oocytes and mild Him; sterile at 25°, 100% unfertilized oocytes in F2.
h1960	Recessive	Viable at 20°, no obvious phenotype; viable at 25°, embryonic arrest and Him.
h1958	Recessive	Viable at 20°, no obvious phenotype; viable at 25°, some developmental arrest.
h1988ts	Recessive	Viable at 20°, small brood size, embryonic and larval arrest and Him; sterile at 25°, 100% sterile.
h1992	Recessive	Difficulty isolating due to linkage to unc-46 and mdf-1.
h1987	Recessive	Viable at 20°, no obvious phenotype; viable at 25°, developmental arrest.
h1985	Recessive	Difficulty isolating due to linkage to unc-46 and mdf-1.
h1989	Dominant	Difficulty isolating due to phenotype.
h2168	Recessive	Difficulty isolating due to linkage to unc-46 and mdf-1.

All of the recessive suppressors not located on LGV were isolated from the unc-46(e177) mdf-1(gk20) background and analyzed for phenotypes. The temperature sensitivity was examined by shifting L4 hermaphrodites to 25° and scoring the progeny.