表现正常的双亲,生了一个白化病色盲的男孩,这对夫妇的基因型是

表现正常的双亲,生了一个白化病色盲的男孩,这对夫妇的基因型是(    )

A.AaXBY 和AaXBXb               B.AaXBY 和AaXBXB

C.AAXBY 和AaXBXb                      D.AaXBY和AAXBXb

答案

A

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