Fig. 2.

SFS of the NR dataset and demographic models. x axis represents, in log scale, a partition of the number of copies of the minor allele with each number indicating the upper bound of a bin. (Minor allele counts of 1–5 are not binned.) y axis presents, in log scale, the proportion of SNVs that fall into each bin. (Inset) Fraction of variants that are singletons (y axis is presented in linear scale). Data, empirical SFS of NR; model I, a two-parameter model with one epoch of growth, where the duration of growth and final N_e were estimated; model II, an extension of Model I with a third parameter corresponding to N_e before the growth epoch; model III, a model with two separate epochs of growth (Table 1). For clarity, model IV is not presented because its SFS is very similar to that of model III.