Figure 1From: Discovering functional linkages and uncharacterized cellular pathways using phylogenetic profile comparisons: a comprehensive assessmentReference sets of organisms. The relationships and divergence times (Mya – million years ago) of 95 organisms (41 bacterial, 11 archaeal, and 43 eukaryotic genomes) are based on recent studies [95]. The tree branch lengths are not proportional to time.Back to article page