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两对非同源染色体之间发生某个区段转移,从而引起变异的现象属于以下哪种染色体结构变异()

单选题
2021-09-01 20:15
A、重复
B、易位
C、倒位
D、缺失
E、染色体丢失
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正确答案
B

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