Polymerase Chain Reaction is not used in :
| 1. | Confirming presence of a pathogen during early infection |
| 2. | Identifying the mutated genes in suspected cancer patients |
| 3. | Isolating the gene of interest from host DNA to be cloned by recombinant procedures |
| 4. | Detection of the presence of HIV in suspected AIDS patient |
For effective treatment of a disease:
| 1. | Early diagnosis is needed but understanding of its pathophysiology is not needed |
| 2. | Early diagnosis is not needed but understanding of its pathophysiology is needed |
| 3. | Early diagnosis and understanding of its pathophysiology are needed |
| 4. | Neither early diagnosis nor understanding of its pathophysiology is needed |