如图是物种形成的一种模式.物种a因为地理障碍分隔为两个种群a1和a2经过漫长的进化分别形成新物种b和c.在此进程中的某一时刻a种群的 Template




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tomski如图是物种形成的一种模式.物种a因为地理障碍分隔为两个种群a1和a2经过漫长的进化分别形成新物种b和c.在此进程中的某一时刻a种群的 coloring