Figure 5
From: Extensive variation in synonymous substitution rates in mitochondrial genes of seed plants
Individual gene analyses of synonymous sequence divergence. Shown are the dS trees resulting from individual, codon-based likelihood analyses of five mitochondrial protein-coding genes (atp1, cob, cox1, cox2, and cox3) and overall divergence from individual, nucleotide-based likelihood analyses of SSU and LSU rDNA. Branch lengths are in units of synonymous substitutions per synonymous site for the protein-coding genes and in units of substitutions per site for rDNA genes. Topological constraints were enforced during the analysis (see methods). S. = Silene; P. = Plantago.