Table 4.

Synthetic lethality between spa2 and pkc1 mutations^a

Genotype	Viable	Inviableb
spa2 pkc1	0	45
spa2 PKC1	41	0
SPA2 pkc1	37	4
SPA2 PKC1	44	1

^aTYSH1 (spa2::HIS3) was crossed with TFY7 (pkc1::LEU2), and the resulting diploid was subjected to tetrad analysis. 

^bGenotypes of the inviable segregants were inferred from those of the viable segregants.