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Figure 4 | BMC Evolutionary Biology

Figure 4

From: Predictors for reproductive isolation in a ring species complex following genetic and ecological divergence

Figure 4

Isolated effect of each of the four predictors for the development of reproductive isolation in the Ensatina ring species: a) mitochondrial DNA, b) nuclear DNA, c) climate, and d) vegetation. Data points are pairwise comparisons between populations that contact around the ring (ten light grey points), at the mid-ring (one dark grey point) and at the terminus (two black points). Solid black lines represent the best-fit line for each predictor variable, dashed red lines designate contours of the predicted formula, and respective probabilities are denoted in the corner of each plot.

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