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Fig. 1 | BMC Evolutionary Biology

Fig. 1

From: Timeframe of speciation inferred from secondary contact zones in the European tree frog radiation (Hyla arborea group)

Fig. 1

Distribution of H. arborea (green) and H. orientalis (blue) mtDNA haplotypes (a) and nuclear gene pools (b). The latter is shown by Bayesian clustering assignments of individual microsatellite genotypes (barplots) and mean probability assignment of each population (map) into two groups (STRUCTURE, K = 2). Pie charts are proportional to sample size. Dash lines highlight the two transects considered in the cline analyses. Zooms on hybrid zones are provided in Additional file 1: Figure S1. Color shadings (top right frames) show the distribution ranges of the two species, following [15]

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