The table shows the possible transitions out of a given state (kab, ka, kb, κ) and their respective rates.

The first row gives the rate for coalescence between two lineages that are ancestral to both loci. The second row gives rate for two types of events, coalescences between two lineages ancestral to only locus a, and coalescences of a lineage ancestral only to a with a lineage ancestral to both. The third row reflects similar events for locus b. The last row gives the rate of recombination events. Note that these rates are defined to permit a maximum of 1 ancestral recombination event occurring between locus a and b.