Estimates of demographic and selection parameters from the site frequency spectrum.

aWatterson's estimate of θ, see Methods. bLog likelihood of observed SFS given the demographic/selection model. cLikelihood ratio test for comparison with next less complex model. dNanc = genetic effective size of population prior to instantaneous expansion; 95% confidence intervals reported here are based on 10,000 bootstrapped parameter estimates, see Methods. eGenerations elapsed since expansion. fModel includes a single selection coefficient (s) at all sites in the genome. gModel includes a category of neutral sites (fraction = p0) and a second category (1-p0) with selection coefficient s. hBootstrapped estimates all equal to 0.05.