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Fig. 2 | BMC Evolutionary Biology

Fig. 2

From: Variation in ligand responses of the bitter taste receptors TAS2R1 and TAS2R4 among New World monkeys

Fig. 2

Phylogenetic relationships among extant and ancestral TAS2R1 and TAS2R4 receptors. a Phylogenetic relationships among extant and ancestral TAS2R1 receptors. The colors of the ancestral nodes 1–4 correspond to those in the graphs of Fig. 3. Amino acid substitutions are indicated along each branch. The arrows indicate increased/decreased camphor sensitivity. b Phylogenetic relationships among extant and ancestral TAS2R4 receptors. The colors of the ancestral nodes 1–4 correspond to those in the graphs of Fig. 3. Amino acid substitutions are indicated along each branch. The arrows indicate increased/decreased colchicine sensitivity

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