| Column I | Column II | Column III | |
| (1) | Petromyzon | Ectoparasite | Cyclostomata |
| (2) | Ichthyophis | Terrestrial | Reptilia |
| (3) | Limulus | Body covered by chitinous exoskeleton | Pisces |
| (4) | Adamsia | Radially symmetrical | Porifera |
The output (Y) of the given logic implementation is similar to the output of an/a …………. gate.
What is Microalbuminuria ?

In the above represented plasmid an alien piece of DNA is inserted at the EcoRI site. Which of the following strategies will be chosen to select the recombinant colonies?