Fig. 3
Differentially expressed paralogous pairs diverge in tissue specificity. Paralogous pairs were selected for similar (log2-ratio < 1.25, n = 245) or differential (log2-ratio ≥ 7, n = 156) average expression levels. a Tissue specificity (τ) is correlated for the two genes of a pair with similar expression levels. b Lower-expressed genes of pairs with differential gene expression have stronger tissue specificity than do their higher-expressed paralogs