Table 4.
Substitution parameters for branches without positive selection
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aClassification of topologies and branches following that in Figure 1. FSGD indicates fish-specific genome duplication.
bNumber of cases where the model A with foreground ω2 = 1 is not significantly less likely than the model A with ω2 > 1.
cω0, the purifying selection pressure, has the same value for foreground and background sites; only the proportion of sites under ω0 varies.
dCorresponding foreground sites are all ω1 = ω2 = 1.
