Detected conversion events in the human α-globin cluster. The human α-globin cluster contains five genes (ζ1, μ, α2, α1, and θ) and two pseudogenes (ζ2 and α3) (yellow). Each gene comprises three exons (gray) and two introns (yellow). The first panel plots the percent identities of the aligned human paralogs. Blue segments indicate conversion events in the human lineage. The other panels are "evidence plots" similar to Figures 4 and 6, each focusing on conversion observations detected using a particular outgroup. They recapitulate the relevant subset of paralog alignments from the first panel (black/blue), superimposed on the alignments to the orthologs in the outgroup species (brown) for comparison.