Figure 1
Bootstrapping of the ratio of expression changes that have occurred in the human lineage to those that have occurred in chimpanzee lineage (b H /b C ) in brain and liver tissue. (a) Diagram of branches of three species, human, chimpanzee and orangutan. (b) Bootstrapping of the branch ratios using the absolute distance; bH/bC was estimated to be 1.95 and 1.01 in the brain and liver tissue, respectively. (c) Bootstrapping of the branch ratios using Euclidean distance; bH/bC was estimated to be 1.87 and 1.07 in the brain and liver, respectively. (d) Bootstrapping of the branch ratios using scaled Euclidean distance; bH/bC was estimated to be 1.75 and 1.02 in the brain and liver, respectively.