已知豌豆的高茎(D)对矮茎(d)为显性,在某杂交试验中,后代有5

已知豌豆的高茎(D)对矮茎(d)为显性,在某杂交试验中,后代有50%的矮茎,则其亲本的遗传因子组成是

A.DD×dd     B.DD×Dd      C.Dd×Dd    D.Dd×dd

答案

D

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