Fig. 2.

—Diagram of the subset of PSGs that are involved with cellular respiration in (A) the Krebs cycle or (B) the oxidative phosphorylation pathway. We used information from the Genecards and KEGG databases to identify the location where PSG gene products act within the pathways. The font color and symbols (*, +, and −) for PSGs indicate the elevation category of the species for which the gene was identified. PSG results from the multibranch foreground PAML analyses are indicated in bold text.