Figure 4
From: High frequency of lactose intolerance in a prehistoric hunter-gatherer population in northern Europe
Simulation results for four models where one prehistoric sample and one extant sample have been collected. The distribution of a derived allele in the prehistoric sample, conditional on 144 derived alleles in the extant sample. A) The population starts to grow (exponentially) from 5,000 individuals 225 generations ago to a size of 50,000 individuals at present. B) The population starts to grow (exponentially) from 100 individuals 225 generations ago to a size of 10,000 individuals at present. C) Constant population size of 5,000 individuals. D) Constant population size of 500 individuals.