- Do the Chinese like playing basketball?- . A . Yes, he does B . No, they aren't C . Yes, they do D . No, they can't 答案:C
在某种牛中,基因型为AA的个体的体色是红褐色,a是红色。基因型为Aa的个体中雄牛是红褐色的,而雌牛是红色的。一头红褐色母牛生了一头红色小牛,这头小牛的性别及基因型为
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A.
雄性或雌性,aa
B.
雄性,aa或Aa
C.
雄性,Aa
D.
雌性,Aa