Fig. 2 in A new vertebrate for Europe: the discovery of a range-restricted relict viper in the western Italian Alps

Fig. 2. Genetic relationship of the two nuclear genes analysed (BACH1 and RAG1) between the four analysed species: V. ammodytes, V. aspis, V. berus (Italian clade) and V. walser analysed with TCS 1.21 (Clement et al. 2000). Every mutation is represented by a circle.