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Figure 3 | BMC Evolutionary Biology

Figure 3

From: Distinguishing migration from isolation using genes with intragenic recombination: detecting introgression in the Drosophila simulans species complex

Figure 3

Effect of recombination rate on the proportion of significant tests. 1,000 coalescent simulations were performed for each value of recombination parameter ρ an each model: isolation (black), migration (red) and unidirectional migration (blue). Continuous lines indicate the proportion of significant tests under the models with the presence of migration (for R statistics) or presence of unidirectional migration from P2 to P1 (for W statistics), i.e. they indicate the power of the test. Dotted lines indicate the proportion of significant tests under the models without migration (for R statistics) or without migration from P2 to P1 (for W statistics), i.e. they indicate the false positive rate. Proportion of significant tests is estimated as a function of recombination rate. Filled symbols report the values for ρ = 0 and are represented at an arbitrary position of the x-axis. A. R F statistic, B. W x1s2 Statistic.

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