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Fig. 3 | BMC Evolutionary Biology

Fig. 3

From: Widespread gene duplication and adaptive evolution in the RNA interference pathways of the Drosophila obscura group

Fig. 3

Bayesian relaxed clock gene tree for Argonaute 2. Duplication events are marked by yellow diamonds, species other than the obscura group are collapsed (brown triangle), and paralog clades are colored. Bayesian posterior supports are only shown for the nodes with support less than 1. Genes not previously included in the analysis of [4] are marked in bold. Time is expressed relative to the split between the obscura and subobscura subgroups (orange boxes), which was constrained to be 1 using a strongly informative prior. For reference, the obscura-group species tree inferred from concatenated ancestral copies of each gene (consistent with published phylogenies of the group [48]) is shown inset, with the inferred number of Ago2 paralogs marked next to each species

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