Figure 4

Comparison of temporal gene expression patterns between D. discoideum and A. subglobosum . A: Results of collective clustering are shown as heat maps with the scale shown below. Cluster distances are shown on the left. Clusters 1–3 represent down-regulated genes, while clusters 4–8 contain up-regulated genes during development. B: Fractions of genes in each cluster for A. subglobosum (right) and D. discoideum (left). Numbers indicate the genes in each cluster. C: Differential expression patterns of orthologous gene pairs for total (top), prestalk-specific (middle), and prespore-specific genes (bottom). Match: in the same cluster; similar: different cluster but in the same group; precocious: A. subglobosum genes were in the up-regulated group, while D. discoideum orthologs were in the down-regulated group; retarded: opposite of precocious.