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Figure 4 | BMC Evolutionary Biology

Figure 4

From: Positive selection and ancient duplications in the evolution of class B floral homeotic genes of orchids and grasses

Figure 4

Test of hypotheses about the variation of ω along the phylogeny of GLO -like genes from the Orchidaceae. This figure is organized like Figure 3, but the phylogeny employed in these tests is based on the alignment of the complete coding sequences of GLO-like genes. However, to facilitate the inference of the parameters for each model, the outgroup and sequences from clades not directly relevant to the analyses were removed from the alignment and the phylogeny was re-estimated with an ad hoc model as described in Methods. The branches labeled with italics were tested for positive selection with branch-site models A1 and A.

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