Fig. 4
From: xenoGI 3: using the DTLOR model to reconstruct the evolution of gene families in clades of microbes
An illustration of the reconciliation of the gene tree for the pit genes against the species tree for a set of enteric bacteria, based on xenoGI output. The species tree is in the background in gray. The gene tree is drawn in the foreground, with the part corresponding to pitA genes in orange, the part corresponding to pitB genes in blue and the gene duplication event as a black square. Note that the gene duplication occurred after the divergence of S. bongori, but before the divergence of E. albertii from the E. coli clade