Figure 1.
A phylogenetic network that derives the set of sequences M. The two recombinations shown are single-crossover recombinations, and the crossover point is written above the recombination node. In general the recombinant sequence exiting a recombination node may be on a path that reaches another recombination node, rather than going directly to a leaf. Also, in general, not every sequence labeling a node also labels a leaf.