The genome sizes of these viruses from smallest to largest are:
- Φ x 174 (smallest genome).
- T7 (medium genome size).
- Lambda (λ) (larger genome).
- T4 (largest genome).
| List I (Enzyme) | List II (Function) |
|---|---|
| (A) Cytochrome oxidase | (I) Electron transport system |
| (B) Topoisomerases | (II) Change linking number |
| (C) Cohesins | (III) DNA Replication |
| (D) PCNA | (IV) Cell cycle |