Figure 9From: Dating and functional characterization of duplicated genes in the apple (Malus domestica Borkh.) by analyzing EST dataGene expression divergence between apple paralogs. Frequency distributions of the Pearson's correlation coefficients computed with the expression profiles of pairs of duplicated genes. Paralogs showing Ks ≤ 0.4 (gray line) and Ks > 0.4 (black line) are shown. The dotted vertical line (r = 0.78) represents the threshold value used to consider two genes as being significantly co-regulated (α = 0.05).Back to article page