Figure 3 in Rare genetic admixture and unidirectional gene flow between Vipera aspis and Vipera berus at their contact zone in western France

Figure 3. Principal Coordinates Analysis (PCoA) based on 10 microsatellite markers showing the distribution of morphologically intermediate individuals in between the pure V. aspis and pure V. berus individuals in the Loire Atlantique department (France). Individual 4.14 was morphologically intermediate but genetically assigned to pure V. aspis.