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Figure 1 | BMC Evolutionary Biology

Figure 1

From: Asymmetric gene introgression in two closely related Orchis species: evidence from morphometric and genetic analyses

Figure 1

Clustering analysis of AFLP data for a pure Orchis militaris population, pure O. purpurea population and a hybrid population. (a) Principal coordinate (PCO) plot based on individual genetic distance calculated with 113 AFLP markers. The first two axes explain 63.6% and 17.7% of the variation, respectively. (b) Clustering analysis using structure. Individuals are represented by columns, with colours representing the proportion of their genome assigned to the K = 2 inferred clusters in the model-based admixture analysis.

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