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题目内容
Biologists traditionally thought that restricted gene flow was ____________ the development of adaptations in a population, but empirical evidence shows that adaptation can be maintained despite very high levels of gene flow.
- Aan impediment to
- Ba consequence of
- Ca harbinger of
- Da requisite for
- Ean aberration in
D显示答案
以上解析由 考满分老师提供。