Additional file 5.
Structure of duplicated gene pairs within the Populus SET gene family. Exons, green filled boxes; introns, black single lines. UTRs are indicated by thick blue lines at both ends. Intron phases 0, 1 and 2 are indicated by numbers 0, 1 and 2 in the figure.
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Lei et al. BMC Evolutionary Biology 2012 12:51 doi:10.1186/1471-2148-12-51