Distribution of fold change values. For each gene, the box-plot gathered about a hundred log2(FC) values presented in Figure 5 (Legend as in Figure 1). The extreme values amongst outliers are marked with a red asterisk. The colours of the boxes relate the classes that were determined from the HAC (see Figure 7). From the top to the bottom, we listed the new candidates (‘R series’), the classical reference genes (‘C series’) and the putative references homologous to S. cerevisiae genes (Sc1─Sc4). The right panel resumes the type of distribution (normal or not), average, median and interquartile for each gene.