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Figure 1 | BMC Evolutionary Biology

Figure 1

From: The vertebrate ancestral repertoire of visual opsins, transducin alpha subunits and oxytocin/vasopressin receptors was established by duplication of their shared genomic region in the two rounds of early vertebrate genome duplications

Figure 1

Phylogenetic relationships between the visual opsin genes of the LWS, SWS1, SWS2, RH1 and RH2 clades. Tree topology inferred with the phylogenetic maximum likelihood method from an amino acid sequence alignment, supported by a non-parametric bootstrap analysis with 100 replicates. Red arrowheads indicate nodes with bootstrap values lower than 50% that were not considered informative. The tree is rooted with the human OPN3 sequence (not shown). Inlaid: (A) Neighbor joining (NJ) topology of the LWS clade, (B) NJ topology of the RH1 clade. See Additional file 2: Figures S1 and S2 for full trees, including all bootstrap values and root. For the sequence names, species abbreviations are applied as described in Methods, followed by the number of the chromosome or linkage group where the gene is located (if known) and the gene/subtype name (see Table 1). Scale bars indicate phylogenetic distance as number of substitutions per site.

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BMC Ecology and Evolution

ISSN: 2730-7182

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