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Figure Caption
Figure 1
Phylogenetic relationship of the period clock gene family (per). Gene family members from Danio rerio (DR), Esox Lucius (EL), Salmo salar (SSA), Salvelinus alpinus (SA), Oncorhynchus mykiss (OM), Oncorhynchus kisutch (OK), and Oncorhynchus tshawytscha (OT) were re-annotated. Values on the relevant node depict the bootstrap values. Reciprocal gene retention (red), gene duplication (orange), and reciprocal gene loss (blue).
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Full text @ Front. Physiol.