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人的性别遗传

> 人类卷舌与不卷舌的性状受基因控制，R决定能卷舌，r决定不能卷舌，现有一对夫妇，父亲能卷舌（RR），母亲不卷舌（rr），生下的后代基因组成是 ( ) A．RR B．Rr C．rr D．RRrr

问题：

发布时间：2024-09-10

人类卷舌与不卷舌的性状受基因控制，R决定能卷舌，r决定不能卷舌，现有一对夫妇，父亲能卷舌（RR），母亲不卷舌（rr），生下的后代基因组成是 ( )

A．RR B．Rr C．rr D．RRrr

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