Fig. 11.

Caterpillar locus trees $L_{(ab,c,d)}$ (left) and $L_{(ac,b,d)}$ (right) embedded into the species tree. The red circles represent the potential duplication locations that could influence the gene tree probabilities. Note that the ${\mathcal{L}}_r$ scenarios in the root edges are identical. That is, $x\prime$ lengths are equal, and the duplication locations above the dashed speciation lines are identical