Table 1.

Cells lacking srw1⁺ are sterile but sterility is suppressed by deletion of cig2⁺ or inactivation of cdc2⁺

Strain	% Mating frequencies
	27°C	25°C
h− leu1 × h+S leu1	57.0	55.2
h−Δsrw1 leu1 × h+S leu1	<0.01	<0.01
h−Δcig2 Δsrw1 leu1 × h+S leu1	35.6	34.7
h+S cdc2-M35 Δsrw1 leu1 × h− leu1	0.44	0.02

Cells were grown to log phase in YEL, mixed and spotted on MEA plates followed by a 2-d incubation at the indicated temperature. Mating efficiencies were calculated as described in MATERIALS AND METHODS.