Fig. 1.

Three examples of ARGs. The dataset is shown on the left in binary format, with 0’s and 1’s corresponding to the ancestral and mutant state at each site, respectively. Mutation events are shown as black dots and labelled by the site they affect; green filled circle corresponds to a recurrent mutation. Recombination nodes (in blue) are labelled with the recombination breakpoint; material to the right (left) of the breakpoint is inherited from the parent connected by the edge labelled S (P) for ‘suffix’ (‘prefix’)