为什么F质粒整合细菌基因组中,会产生不同的Hfr细菌?
参考答案:
F质粒通过IS序列与基因组中的IS位置进行同源重组,由于细菌中有多个不同的IS序列,产生不同的Hfr细菌。
根据下列各句句意和空白之后的汉语提示词,在答题卡指定区域的横线上写出对应单词的正确形式,每空只写一词。
小题1:He drew a ___________________(结论) after a lot of experiments.
小题2:The doctor is well-known for having _______(治疗) some people of the deadly disease.
小题3:It’s difficult to __________(处理) the machine.
小题4:Employees are expected and required to ______ (参加) team meetings.
小题5:To our great _________(高兴),we will have seven days off this months.
小题6:The whole country __________ (团结)together and got through the horrible earthquake in 2008.
小题7:Have you noticed that all the statues in the temple are ______________ (辉煌的)?
小题8:There was a _______________(矛盾 )between the accounts of the witnesses.
小题9:The _______________ (建设)work of the theatre is supposed to be completed within the year.
小题10:She ______________(折叠) the letter in half and put it into her pocket.
尿液分析仪检测后质量控制主要指()
A.严格规范的实验操作
B.对报告的审核、签发
C.正确的尿标本收集
D.有效的标本标记
E.在规定的时间内完成操作