Fig. 1From: Adaptive evolution driving the young duplications in six Rosaceae speciesTop 20 protein domains of the young duplicate genes in species-specific expansions. The x-axis means the numbers of different domains. The y-axis means the domains taking the top 20 places of domain numbers. a: F. vesca, b: M. x domestica, c: P. communis, d: P. persica, e: R. chinensis and f: R. occidentalisBack to article page