TABLE 4

Poisson-calculated parameter estimates under nested likelihood models of domestication

Contraction at fixed time (d.f. = 1)Contraction at unknown time (d.f. = 2)Bottleneck of fixed size (d.f. = 2)Bottleneck of unknown size (d.f. = 3)
Modelsτ = fixedω = variedP-valueτ = variedω = variedP-valueτ = fixedω = variedτB = variedωB = 0.1P-valueτ = fixedω = variedτB = variedωB = variedP-value
Uncorrected5,0000.234.01 × 10−82,2450.120.515,00064.51,8350.10.515,0000.113,0230.90.8
Corrected5,0000.252.27 × 10−516,1930.380.115,0002.52,5910.10.035,0001.82,1590.080.1
  • See Table 2 for description of parameters. P-values were calculated from a likelihood-ratio test, where a P-value <0.05 indicates the alternative model fits the data better than the previous model. Null model: τ = ∞ and ω =1.