| List -I | List-II | ||
| A | Plasmid of salmonella | I | Join foreign DNA to plasmid |
| B | Restriction enzymes | II | Insertional inactivation |
| C | Ligases | III | Construction of 1st recombinant DNA |
| D | B-galactosidase | IV | Molecular scissors |
Rearrange the following parts to form a meaningful and grammatically correct sentence:
P. that maintaining a positive attitude
Q. even in difficult situations
R. is essential for success
S. and helps overcome obstacles effectively