Figure 6

The predicted utility Π − Max(x ₁, x ₂) versus substitution rate λ is plotted based on the JC [63] model (solid line), the K2P (dotted line), the HKY (dashed line), and the GTR model (dot-dashed line), for the four-taxon tree as depicted in Figure 1 in which t ₀ = 0.1, T ₁ = T ₂ = T ₃ = T ₄ = 0.25, λ ₁ = λ ₃ = 1, and λ ₀ = λ ₂ = λ ₄ = λ. The model parameter values are presented in Table 1.