Fig. 4.
Effect of mutations affecting translesion DNA synthesis and homologous recombination on sensitivity to MMS. Tenfold dilutions of exponentially growing cultures were spotted on YPD (viable cell count) or YPD containing 0.001% or 0.005% MMS. Colony growth after 48 h (and 72 h for selected mutants) of incubation at 30°C is shown.