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. 2008 Dec 9;3(12):e3900. doi: 10.1371/journal.pone.0003900

Figure 1. Scatterplot of postzygotic isolation indices and genetic distance (uncorrected p) of (A) the entire dataset (rs = 0.406, N = 680, P<0.001), and (B) corrected for phylogenetic independence (rs = 0.538, N = 101, P<0.001).

Figure 1

Both show that postzygotic reproductive isolation increases with increasing genetic distance.