Fig. 2
From: An insight into the gene expression evolution in Gossypium species based on the leaf transcriptomes
Comparative analysis of expressed orthologous genes across cotton species. A Statistics on the number of species in which the orthologous groups (OGs) are expressed. An OG is marked as expressed if one or more of its gene components show detectable expression (average TPM ≥ 1); B Statistics on conserved and species-specific OGs; C The relationship among cotton species estimated by OG expression profile. A binary “0/1” matrix was constructed to represent OG expression (0: not expressed; 1: expressed), which was then used to calculate pairwise Pearson correlation coefficients