Table 1 Summary of the alternative notions of orthology in the presence of HGT events
From: Relative timing information and orthology in evolutionary scenarios
Reconciliation condition | HGT irrelevant | HGT excluded |
|---|---|---|
\(\mu ({{\,\textrm{lca}\,}}_T(x,y)) \in V^0(S)\) | \(\Psi ^{w}(\mathcal {S})\) | \(\Theta ^{w}(\mathcal {S})\) |
Weak quasi-ortholog | Weak ortholog | |
\(\mu ({{\,\textrm{lca}\,}}_T(x,y)) = {{\,\textrm{lca}\,}}_S(\sigma (x), \sigma (y))\) | \(\Psi ^{s}(\mathcal {S})\) | \(\Theta ^{s}(\mathcal {S})\) |
Strict quasi-ortholog | (Strict) ortholog |