Figure 2.

Shared Clade-Specific Nonsynonymous Rate (dN) Acceleration in Geraniaceae.

RNAP and SIG genes are highlighted in the key in blue and orange, respectively. Blue numerals on the constraint tree indicate shared dN acceleration in RNAP genes of the Pelargonium C clade. For a more detailed version of the constraint tree, see Supplemental Figure 5. Numbers at nodes indicate accelerated dN in corresponding gene from the key at left (0 to 14, plastid genes; 15 to 29, nuclear genes). Scale bar represents the number of nucleotide substitutions per codon. The long branch leading to E. chrysanthum and E. gruinum was interrupted for ease of visualization.