题目内容：
当一对基因都是隐性基因时，表现出来的性状叫做
A.显性性状
B.显性基因
C.隐性性状
D.隐性基因
参考答案：
选择题：当一对基因都是隐性基因时，表现出来的性状叫做
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- 题目类型：选择题
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