Heat-map display and hierarchical clustering of genes significantly regulated by the four putative regulators considered. The top row is the expression of the putative regulator (red indicates high expression, and blue low expression). All remaining rows are the hierarchically clustered significant genes. Each column represents a single segregant, where the segregants have been separated by genotype at the putative regulator's locus (black line). The columns have been ordered according to increasing expression of the putative regulator within each genotype. (a) CNS1 and its 144 significant genes. (b) ILV6 and its 51 significant genes. (c) SAL1 and its 36 significant genes. (d) NAM9 and its 14 significant genes.