下列能产生RR、Rr、rr三种基因型的杂交组合是( )A.RR×rr B.Rr×Rr C.rr×...
问题详情:
下列能产生RR、Rr、rr三种基因型的杂交组合是( )
A.RR×rr B.Rr×Rr C.rr×Rr D.RR×Rr
【回答】
解:A、RR×rr→Rr,A错误;
B、Rr×Rr→RR、Rr、rr,B正确;
C、rr×Rr→Rr、rr,C错误;
D、RR×Rr→RR、Rr,D错误.
故选:B.
知识点:基因的分离定律
题型:选择题
问题详情:
下列能产生RR、Rr、rr三种基因型的杂交组合是( )
A.RR×rr B.Rr×Rr C.rr×Rr D.RR×Rr
【回答】
解:A、RR×rr→Rr,A错误;
B、Rr×Rr→RR、Rr、rr,B正确;
C、rr×Rr→Rr、rr,C错误;
D、RR×Rr→RR、Rr,D错误.
故选:B.
知识点:基因的分离定律
题型:选择题