| List-1 (Scientists) | List-II (Contribution) | ||
| A | Maxam-Gilbert | I | DNA polymerase isolation |
| B | Stanley Cohen | II | DNA sequencing |
| C | Kornberg | III | Genetic code |
| D | Har Gobind Khorana | IV | DNA cloning |
Choose the correct answer from the options given below
| List I (Genetic Disorders) | List II (Genetic Alteration) | ||
| A | Down syndrome | I | Gain of X-chromosome |
| B | Klinefelter's syndrome | II | Loss of X-chromosome |
| C | Turner's syndrome | III | Trisomy of chromosome 21 |
| D | Cri du chat syndrome | IV | Deletion of small terminal portion of chromosome 5 |
Choose the correct answer from the options given below: