Expression levels in vegetative and differentiating cells. Expression levels of pombe-specific, yeast-specific, and core genes (A) in vegetative cells and (B) in cells undergoing meiotic divisions 5 h after inducing sexual differentiation. Microarray signal intensities were normalized to the median signal of all genes (see Methods). Genes were distributed into eight bins according to their expression signals. The values on the X-axes indicate the maximum normalized signals for a given bin and the minimum signal for the next bin. For example, 8 means that genes in this bin are between fourfold and eightfold more highly expressed than the median expression signal under the given condition. Absolute gene numbers are shown in Table 1.
