Figure 3.

Part of the simplest reconciled tree that has the lowest number of duplication and deletion events. The reconciled tree involves 24 gene duplications and 44 gene losses for a total cost of 68, and requires 40 deep coalescenses. The solid boxes indicate gene duplications that were inferred on the basis of mismatches between the gene tree and the species tree. The open boxes indicate those duplications that required multiple copies of Adh genes within the same species. The gray lines indicate the lineages that are presumed to be lost after the duplications or were not found in our analysis.