Table 1. Likelihood parameter estimates under lineage-specific model of post-duplication branches of Hh vertebrate paralogs, branch calculated with PAML v4.3 [51].
| Model | ω0 | ω1 | Lnl | Models compared | LRT (2Δl) | p-value | df | |
| A | One-ratio (M0) | 0.0610 | NA | −29435.14 | ||||
| B | Dhh two-ratio (unconstrained) | 0.0610 | 999 | −29432.95 | A and B | 4.38 | 0.04 | 1 |
| C | Dhh two-ratio (constrained) | 0.0610 | 1 | −29433.13 | C and B | 0.36 | 0.55 | 1 |
| D | Ihh/Shh two-ratio | 0.0612 | 921 | −29434.62 | A and D | 1.05 | 0.31 | 1 |
| E | Ihh two-ratio | 0.0610 | 0.8302 | −29434.96 | A and E | 0.37 | 0.54 | 1 |
| F | Shh two-ratio | 0.0610 | 0.1115 | −29434.85 | A and F | 0.59 | 0.44 | 1 |