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Figure 4.13 Allele frequency in the island population for a diallelic locus under the continent-island model of gene flow. The island population allele frequencies (pisland) over time are shown for six different initial values (solid lines). The continent population has an allele frequency of pContinent = 0.5 shown by the dashed line. In the left-hand panel m = 0.1 and in the right-hand panel m = 0.05. Equilibrium is reached more slowly when the rate of gene flow is lower. In contrast, the difference in allele frequencies between the island and continent does not affect time to equilibrium for a given rate of gene flow. Note that the time scales in the two graphs differ.

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