Down综合征最常见的核型是( )A.47,XX(XY),+21 B.4

资格题库2022-08-02  35

问题 Down综合征最常见的核型是(    )A.47,XX(XY),+21B.46,XX(XY),-14,+(14q21q)C.45,X0/46,XXD.45,X0E.45,XX(XY),-14,-21,+(14q21q)

选项 A.47,XX(XY),+21
B.46,XX(XY),-14,+(14q21q)
C.45,X0/46,XX
D.45,X0
E.45,XX(XY),-14,-21,+(14q21q)

答案 A

解析
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