新物种形成的必要条件是 �

新物种形成的必要条件是 ( )

(A)具有一定的形态结构和生理功能 (B)产生了地理隔离

(C)形成了生殖隔离 (D)改变了基因频率

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新物种形成的必要条件是 �

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