Question

（2008年上海生物）据图，下列选项中不遵循基因自由组合规律的是        (     )

                                    

A.                                                            

B.                                                                                                                                                                                                                                                             

C.                                          

D.

Answer 1

  A?

解析:

  A、a和D、d位于同一对同源染色体上，不遵循基因的自由组合规律。