Heatmap of correlation coefficients between species and tissues.

Pearson correlation coefficients were calculated between different tissues and species combinations based on log transformed gene expression values (5304 common orthologous or homeologous genes). These values were then used to cluster each tissue-species combination. Both dendrograms represent the same information and each leaf depicts one tissue and species combination. The heatmap shows the correlation coefficient between each combination. The groups at the bottom were manually added to help show how the groups were clustered. (Salp—Arctic charr, SalpH—Arctic charr homeologous gene pair, Okis—coho salmon, Otsh—Chinook salmon, Ssal—Atlantic salmon, Eluc—northern pike, Omyk—rainbow trout).