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【多选题】
关于转位因子，下述正确的是：
A.
分为插入序列、转座子和前噬菌体三类
B.
是细菌基因组中能改变自身位置的一段特异性 DNA 序列
C.
可存在于细菌染色体或质粒 DNA 分子上
D.
可在染色体与质粒、质粒与质粒之间进行转移
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A.
放电时负极发生氧化反应
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负极得到 2 个 e-
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Lower the student's grade.
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查看完整题目与答案
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A.
once and for all
B.
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查看完整题目与答案