Sampling parameters | α | ||||||||
---|---|---|---|---|---|---|---|---|---|

N | T | L | ∆ | Absorption probability | Ň/N | 0.05 | 0.01 | 0.001 | 0.0001 |

10^{4} | 10 | 10 | 1 | 2.6 × 10^{−3} | 1.3 | 1.4 | 1.7 | 2.3 | 3.3 |

10^{4} | 100 | 10 | 10 | 7.9 × 10^{−4} | 1.3 | 1.4 | 1.7 | 2.3 | 2.9 |

10^{4} | 1000 | 10 | 100 | 1.2 × 10^{−3} | 1.3 | 1.6 | 2.4 | 4.3 | 8.1 |

10^{3} | 100 | 10 | 10 | 2.2 × 10^{−3} | 1.3 | 1.7 | 2.5 | 4.5 | 8.3 |

10^{4} | 1000 | 10 | 100 | 1.2 × 10^{−3} | 1.3 | 1.6 | 2.4 | 4.3 | 8.1 |

10^{5} | 10000 | 10 | 1000 | 1.3 × 10^{−2} | 1.3 | 1.2 | 1.5 | 2.3 | 3.6 |

10^{4} | 100 | 5 | 20 | 7.7 × 10^{−4} | 1.7 | 2.0 | 2.9 | 5.2 | 8.5 |

10^{4} | 100 | 10 | 10 | 7.9 × 10^{−4} | 1.3 | 1.4 | 1.7 | 2.3 | 2.9 |

10^{4} | 100 | 100 | 1 | 8.0 × 10^{−4} | 1.0 | 1.1 | 1.1 | 1.2 | 1.4 |

Columns 1–4 show simulation and sampling parameters (see text for notations). Column 5 shows the probability that the allele fixes or goes extinct within the sampling period. Column 6 shows the ratio of the population size most likely under the neutral null hypothesis

*Ň*to the true population size*N*. Columns 7–10 show the ratio of the true fraction of false positives in the likelihood-ratio test to the fraction*α*expected under the assumption that the LRS is distributed as*χ*^{2}with 1 d.f., across a range of*α*-values. We performed 10^{6}neutral Wright–Fisher simulations with the initial allele frequency*ν*_{0}= 0.5. See Table S1 for results for other initial frequencies. Simulations with absorption events were excluded from the analysis.