Additional file 3.

Reconciled tree for the whole β2-microglobulin gene family. The gene tree was reconciled with the species tree using Notung 2.6 (parameter values: 0.9 for losses, 1.35 for duplications, and no cost for conditional duplications). The D/L Score has been used to infer the root of a gene tree. Red squares indicate duplication events, grey lines indicate absent genes, either lost from those species or not yet sequenced. Edges with the minimum root score are highlighted in red and edges with near optimal scores are in pink.

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Raimondi et al. BMC Evolutionary Biology 2011 11:159   doi:10.1186/1471-2148-11-159