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Neighbor joining trees constructed from translated (A) and nucleotide CDS sequences (B) of maize and four other grass species, with Arabidopsis as an outgroup. Two paralagous copies are present only in maize. GRMZM, maize; Sb, sorghum; Si, foxtail millet; LOC, rice; Bradi, Brachipodium; AT, Arabidopsis.
