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Fig. 4 | BMC Evolutionary Biology

Fig. 4

From: PastView: a user-friendly interface to explore ancestral scenarios

Fig. 4

Output of a PastView analysis for the study of HIV-1A epidemiological history in Albania (Salemi et al., 2008 [15]). The countries associated with the tree sequences are used to compute ancestral areas by three methods: maximum a posteriori (MAP), the joint most likely scenario, and parsimony (DELTRAN). (a) A country color-code is used to color nodes and branches if their associated ancestral annotations are the same for the three methods; if not, bubbles are displayed. (b) A filter (threshold based on MAP probability minus 40% of its value) is used to display pie charts of posteriors for ambiguous nodes. (c), (d) Tree-like representations of transitions (MAP and joint inferences, respectively); numbers indicate the numbers of identical transitions having the same ancestor in the transition maps type 1. (e) The transition query ‘* Albania’ highlights the tree pathways from the root to Albania; it displays the two distinct transitions from Greece to Albania

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