Figure 3

Allelic gene conversion within array Tb17 (hypothetical protein, Tb927.3.4070), identified by phylogenetic criterion. A. TOPALi output showing the results of a sliding window analysis using a HMM method on gene copies 2–5. Phylogenies were estimated for the four sequences in each window along the alignment, producing probabilities for the three possible topologies at each point. Where the probability reaches 1 for any topology (dashed line), the region concerned is shaded. B. Diagram of the chromosomal position of Tb17. The region towards the C-terminus identified as having a significantly different phylogenetic signal, is shown as a black bar and linked to associated evidence in A. C. Phylogenetic tree for homologs of Tb17 from six species. Values are bootstrap proportions out of 500.