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Table 3 The number of REB, MREB and PS genes in different avian lineages

From: Molecular evolution of genes in avian genomes

  Ancestral lineage Chicken lineage Zebra finch lineage
Rapidly evolving bird (REB) genes 419 1,148 1,202
More rapidly evolving genes in birds (MREB) than in other amniotes 103 432 1,154
Positively selected (PS) bird genes 259 883 936