Time warping and concordantly expressed genes. (A, B) Orthologous expression profiles for genes from the two yeast species are superimposed on the absolute timescale, before alignment. The selected data ranges correspond to ranges marked in Figure 1B. (C, D) Profiles for the same genes, adjusted according to the global alignment path, (relative time scale). (E) Correspondence between the cell cycle phases in S. cerevisiae and S. pombe, established based on the global alignment. Notice collapse of M-G1 phase and expansion of S-G2 phase region in S. pombe.