题型:问答题 简答题 G/G易位型Down综合征A.核型46,XX(XY),-14,+t(14q21q)B.核型46,XX(XY),-21,+t(21q21q)C.核型47,XX(XY),+21D.核型45,XOE.核型46,XX(XY)/47,XX(XY)+21 查看答案