自然界中新物种的形成方式最常见的是通过长期的地理隔离而达到生

更新 2022-09-03
科目生物
题型选择题
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自然界中新物种的形成方式最常见的是通过长期的地理隔离而达到生殖隔离。这种方式需要通过三个环节的综合作用。三个环节不包括下列哪个环节？

A．提供进化原材料的突变和基因重组

B．使种群基因库中基因定向变异的特殊环境

C．使种群基因频率定向改变的自然选择

D．阻断不同种群间发生基因交流的隔离

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