首页/ 题库 / [单选题]若两对独立遗传的基因间存在隐性上位作用,的答案

若两对独立遗传的基因间存在隐性上位作用,双基因杂种AaBb自交后代的表现型分离比例为( )。

单选题
2021-09-01 20:41
A、9:6:1
B、9:7
C、12:3:1
D、9:3:4
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正确答案
D

试题解析

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