highly significantP -value < 0.00001
For example, the correlation in K s values between the rat-mouse and human-dog lineages is highly significant (Spearman ρ = 0.646, permutation test P -value < 0.00001), and the correlation between the rat-mouse and elephant-tenrec lineages is similar (ρ = 0.671, P -value < 0.00001).