Fig. 13
From: Relative timing information and orthology in evolutionary scenarios
A A HGT-free relaxed scenario where \(G_{_{=}}(\mathcal {S}_1)\subsetneq \Psi ^{w}(\mathcal {S}_1)\). The vertices a and \(a'\) are weak quasi-orthologs but \(aa'\notin E(G_{_{=}}(\mathcal {S}_1))\). B An HGT-free, non-generic relaxed scenario. C A non-generic relaxed scenario for which \(G_{_{=}}(\mathcal {S}_3)\ne \Psi ^{w}(\mathcal {S}_3)\) even though \(\mu ({{\,\textrm{lca}\,}}_T(x,y))={{\,\textrm{lca}\,}}_S(\sigma (x),\sigma (y))\) holds for all \(xy\in E(\Psi ^{w}(\mathcal {S}_3))\)