A.XBXb,XBY B.XbXb,XbY C.XBXb,XbY D.XbXb,XBY
A.XBXb×XBY B.XBXB×XBY C.XBXB×XbY D.XbXb×XbY
A.X染色體上 B.Y染色體上 C.性染色體上 D.常染色體上