(09南充高中第一次月考)有一批基因型为BbCc(两对等位基因独立遗

09南充高中第一次月考有一批基因型为BbCc(两对等位基因独立遗传)的实验鼠,已知B决定黑色毛,b决定褐色毛,C决定毛色存在,c决定毛色不存在(即白色),则实验鼠繁殖后,子代表现型的理论比值黑色褐色白色为

A943           B1231           C934        D961

答案

C

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