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Gene organization around the accD locus in gymnosperms. Green star indicates the lineage where accD has expanded. Genes shown above line are transcribed from left to right, while those located below line are transcribed opposite direction. The half-height region in rps16 represents an intron. The topology (not drawn to scale) in the left side was the same as accD dN tree in Figure 2. The roman numbers I–VI denotes six types of gene organization around the accD.
