遗传因子组成为HH的绵羊有角,遗传因子组成为hh的绵羊无角,遗传

遗传因子组成为HH的绵羊有角,遗传因子组成为hh的绵羊无角,遗传因子组成为Hh的绵羊中,母羊无角,公羊有角。现有一对有角羊生了一头无角羊,则亲本公羊的遗传因子组成是:   

A. hh         B.不确定         C. HH           D. Hh 

答案

D


解析:

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