The results revealed a clear trend: a large proportion (38%–42%) of the recently duplicated genes in the four diploid genomes were flanked by TEs of the same subtype (e.g., GYPSY, COPIA, etc.), whereas only ∼10% of the syntenic gene pairs (generated by WGD) were flanked by TEs of the same subtype in the four diploid genomes ( Figure 2 D).
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