C 控制黑色素形成,G 负责色素的分布。当cc 存在时,无论有无G/g,个体都表现出白色毛色的性状。这种上位效应称作( )上位效应
A.
显性
B.
隐性
C.
单一性
D.
混合性
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【简答题】What are they doing for holiday? They are happy because they are on holiday. Mary is visiting her aunt in Paris. It is a very famous city. And it is a good place to go shopping! Tom is fishing in the ...