问题
选择题
人类双眼皮与单眼皮的性状受基因控制，R决定双眼皮，r决定单眼皮，有一对夫妇，父亲是双眼皮( RR) ，母亲是单眼皮(rr) ，生下的后代基因组成是
[ ]
A．RR
B．Rr
C．rr
D．RRrr
答案
答案：B
搜题请搜索小程序“爱下问搜题”
人类双眼皮与单眼皮的性状受基因控制，R决定双眼皮，r决定单眼皮，有一对夫妇，父亲是双眼皮( RR) ，母亲是单眼皮(rr) ，生下的后代基因组成是
A．RR
B．Rr
C．rr
D．RRrr
答案：B
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