试题与答案

右图是人类遗传病系谱图，母亲是纯合子，该病的致病基因可能是（）①Y染色体上的基因②常

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题型：单项选择题

题目：

右图是人类遗传病系谱图，母亲是纯合子，该病的致病基因可能是（）

①Y染色体上的基因

②常染色体上的显性基因

③常染色体上的隐性基因

④X染色体上的显性基因

⑤X染色体上的隐性基因

A.①②

B.②③

C.③④

D.①⑤

答案：

参考答案：A

考点：高中生物人类遗传病人类遗传病题库
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