Approximately 30% of the human genome consists of protein-coding genes. The remaining parts include regulatory elements, introns, and other non-coding regions essential for genome function and gene expression.
| 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 |