List I | List II | ||
A | Frederick Griffith | I | Genetic code |
B | Francois Jacob & Jacque | II | Semi-conservative mode of DNA replication |
C | Har Gobind Khoran | III | Transformation |
D | Meselson & Stahl | IV | Lac operon |
Frederick Griffith discovered transformation, which is the process where bacteria can take up foreign DNA. Jacob and Monod worked on the Lac operon model, explaining gene regulation. Har Gobind Khorana contributed to the understanding of the genetic code and the synthesis of proteins. Meselson and Stahl proved the semi-conservative mode of DNA replication using isotopic labeling.
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 | List II | ||
---|---|---|---|
A | Mesozoic Era | I | Lower invertebrates |
B | Proterozoic Era | II | Fish & Amphibia |
C | Cenozoic Era | III | Birds & Reptiles |
D | Paleozoic Era | IV | Mammals |