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Figure 4 | BMC Evolutionary Biology

Figure 4

From: Establishment of endolithic populations of extremophilic Cyanidiales (Rhodophyta)

Figure 4

Expected influence of gene flow on genetic differentiation between two populations. Gene flow is measured as Nm (the product between the effective population size, N, and the migration rate, m) and genetic differentiation is investigated by means of the frequency of fixed mutations between the populations (f-fix), the frequency of polymorphisms present in a single population (f-pa), and the difference in frequency between mutations shared between both populations (d-f). The results are based on coalescent simulations under different conditions of gene flow and conditional to the number of observed mutations and the number of chromosomes. In our analyses comparing SP3en and MRs sites, f-fix is zero, the observed f-pa is 0.71, and the observed d-f is 0.095, suggesting Nm > 1.

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