两对相对性状的基因自由组合,如果F2的性状分离比分别为9:7、9:6:1

两对相对性状的基因自由组合,如果F2的性状分离比分别为9:79:6:115:1,那么F1与双隐性个体测交,得到的分离比分别是

A.1:3,1:2:13:1   B.3:1,4:11:3   C.1:2:1,4:13:1  D.3:1,3:11:4

答案

A

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