Fig. 6From: Analysis of the chloroplast genome and phylogenetic evolution of Bidens pilosaPairwise Ka/Ks ratios in different genes. The scale factors associated with each value are displayed on the right side of the graph. The color close to red indicates that the gene has a high Ka/Ks ratio. Red indicates positive selection that is significantly enriched, while blue indicates negative selection that is significantly reduced. See Table S7 for abbreviationsBack to article page