Comparison of gene expression conservation to evolutionary distance. The scatter plots show expression distance as 1 – Pearson correlation, using median-subtracted asinh values (comparable to ratios). (a) Median pairwise correlation over all genes; each point represents a pair of species. (b) Median pairwise correlation over all tissues; each point represents a pair of species. (c) Individual pairwise correlations over tissues, as indicated with colors; each point represents a single tissue in a single pair of species. Estimated species divergence times were obtained from .
Chan et al. Journal of Biology 2009 8:33 doi:10.1186/jbiol130