TABLE 3

Number of ancestors contemporary to the Neanderthal sequence and the minimum value cmin of the admixture coefficient c such that the admixture model can be rejected with a type I error rate of 0.05

Constant population size: tm (yr)One stage of population growth: tm (yr)Two stages of population growth: tm (yr)
Mutation rateQuantity30,000100,00030,000100,00030,000100,000
2.5 × 10−6/site/generationEmbedded Image111 (4.86)41 (1.75)52 (782)20 (2.86)501
95% confidence interval94–14435–5032–771–4032–741–5
cmin0.030.070.060.140.060.95
Embedded Image0.030.060.050.110.050.39
5 × 10−5/site/generationEmbedded Image1 (4.86)1 (1.75)1 (782)1 (2.86)11
95% confidence interval1–11–11–21–31–21–2
cmin0.950.950.950.950.950.95
Embedded Image0.390.390.390.390.390.39
  • The parameter Embedded Image corresponds to the minimum value of the admixture coefficient c such that the admixture model can be rejected with a type I error rate of 0.05 when five sequenced early modern humans (Serre et al. 2004) were added to the estimated number of ancestral lineages. Numbers in parentheses represent values from the study of Nordborg (1998).