Figure 2 Defining criteria for identifying SBF and MBF targets. (a) Distribution of median percentile ranks of Cy5/Cy3 fluorescence ratios from 11 independent microarray hybridizations analyzing Swi4 binding. The threshold for defining SBF targets is indicated by a dotted line. (b) Distribution of median ranks of Cy5/Cy3 fluorescence ratios from 4 independent microarray hybridizations analyzing Swi6 and Mbp1 binding. (c) Fraction of genes in a sliding 50-gene window whose expression profile had a correlation coefficient of 0.5 or greater with that of a canonical G1/S regulated gene, graphed as a function of the median percentile ranks of Cy5/Cy3 fluorescence ratios from the MBF hybridizations. The threshold for defining MBF targets is indicated by a dotted line.