Fig. 1From: Molecular convergent and parallel evolution among four high-elevation anuran species from the Tibetan regionPhylogeny of the 13 species examined in this study. The tree is derived from a maximum likelihood analysis of fourfold degenerate (4D) sites of a concatenated dataset of 1198 orthologous genes (dataset 1). Bootstrap proportions are 100 for all nodes except the sister-group relationship between S. boulengeri and O. popei, which is 95. High-elevation species are marked with symbols. Branch colors represent dN/dS values for external nodesBack to article page