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Figure 7 | BMC Evolutionary Biology

Figure 7

From: Genome-wide identification and evolution of ATP-binding cassette transporters in the ciliate Tetrahymena thermophila: A case of functional divergence in a multigene family

Figure 7

A phylogeny of six sets of ABC gene duplicates in T. thermophila with inferred states of ancestral expression. Tandem duplicates are underlined in black. The following numbers represent four different states of expression: 0 = Silent, 1 = Low expression (some points may silent), 2 = Specific high expression and 3 = Continuous high expression.

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