Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES)
An ideal vector must have which among the following
I. An origin of replication
II. Single cloning site
III. Have a gene encoding transcription
IV. Have a gene encoding resistance to antibiotic Choose the correct combination
A. |
I and IV |
![]() |
B. |
III and IV |
C. |
II and IV |
D. |
I and II |