【单选题】What will be the consequence of not having an origin of replication (ori) in the vector? __________
A.
If an ori is absent, replication of vector would not take place
B.
As the cells divide after taking up the vector, both the daughter cells would be having the vector
C.
A colony of transformed colonies is observed
D.
The vector won’t be taken up by the cell
【判断题】在Windows中,支持长文件名,但文件名中不允许有空格。
【判断题】在Windows系统中,支持长文件名,但最长不可超过256个字符
【判断题】细菌ori可以复制到缺失ori的载体上。
【单选题】在数据完整性规则中,要求“发生联系的实体一定在主键表中存在”的规则是( )。
【判断题】内、外卡钳可以直接测量出长度和内外径尺寸。 ( )
【简答题】金属在固态时改变其晶格类型的过程,称为( )
【单选题】HE染色标本中表皮颗粒层细胞中的嗜碱性颗粒为()