Fig. 4From: Pan-genome analyses of 24 Shewanella strains re-emphasize the diversification of their functions yet evolutionary dynamics of metal-reducing pathwayDynamic evolution of orthologous gene family. a Gene family expansion and contraction in each evolutionary branch. Phylogenetic tree is constructed by 1788 single-copy gene families. The number of expanded (green) or contracted (red) gene families in each strain is on the corresponding branch. MRCA: most recent common ancestor. b Distribution of recent horizontal genes in each strain. c The presence of HGT genes in donor bacteriaBack to article page