题目内容
唐氏综合征标准型核型为
2021-10-13
A.46，XY，-14，+t(14q21q)
B.46，XX，-21，+t(21q21q)
C.46，XY，-21，+t(14q21q)
D.47，XY，+21
E.46，XX/47，XY，+21
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