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. 2019 Feb 19;9:2249. doi: 10.1038/s41598-019-38680-x

Figure 4.

Figure 4

Phylogenetic analyses of TAS2Rs and the impacts of diet to TAS2R repertoire size. (a) The TAS2R gene repertoires of 30 birds identified in this study. The sources of dietary information were shown in Supplementary Table S22. C, carnivorous; H, herbivorous; O, omnivorous. (b) Evolutionary relationships of all 81 intact TAS2R genes from 30 birds. (c) PIC in a total number of TAS2Rs (intact genes, partial genes, and pseudogenes) was positively correlated with PIC in diet codes significantly. PIC in a total number of TAS2Rs (intact genes and partial genes) was positively correlated with PIC in diet codes significantly. The diet code is 0, 0.5, and 1 for the carnivorous birds, the omnivorous birds, and the herbivorous birds, respectively.