移码突变是指() A.碱基对的缺失和插入 B.不等于3的倍数的碱基对的缺失和插入 发布时间:2017-05-11 14:18 │ 来源:www.tikuol.com 题型:单项选择题 A1型题 问题: 移码突变是指()A.碱基对的缺失和插入 B.不等于3的倍数的碱基对的缺失和插入 C.DNA链的大段缺失和插入 D.三联密码的缺失和插入 E.染色体的缺失和插入
题型:单项选择题 A1型题 The war was over about three months ago, ______ the American soldiers in Iraq are still having a lot of trouble to deal with.[ ]A. or B. and C. but D. so 查看答案