问题
填空题
由于DNA是由4种碱基组成的,所以任何限制性内切核酸酶的切割频率的理论值应该是____________________。
答案
参考答案:1/4
由于DNA是由4种碱基组成的,所以任何限制性内切核酸酶的切割频率的理论值应该是____________________。
参考答案:1/4
请仔细阅读小题,从A、B、C、D中找出其相对应的礼仪规则, 并回答第5小题。 小题1:The first and greatest rule. Talking is not allowed, even including talking quietly during the music. 小题2:The musicians do not need your help, and your neighbors need silence. Learn to tap (轻敲) your fingers quietly on the chair - it’s a good finger exercise. 小题3:Drinks and candies are not allowed. 小题4:Remember that you are representing your school, and you want to be on your best behavior. There are many eyes looking at you.
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