Match List I with List II 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
Choose the correct answer from the options given below:
| 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 |
Choose the correct answer from the options given below:
- A-III, B-II, C-I, D-IV
- A-III, B-IV, C-I, D-II
- A-II, B-III, C-IV, D-I
- A-IV, B-I, C-II, D-III
The Correct Option is B
Approach Solution - 1
To correctly match the items from List I with List II, let's analyze the contributions of each scientist mentioned:
- Frederick Griffith is renowned for discovering the phenomenon of Transformation, a process where genetic material from one cell is taken up by another cell, often altering its genetic makeup.
- Francois Jacob and Jacques Monod are credited with developing the concept of the Lac operon, a model explaining gene regulation in bacteria.
- Har Gobind Khorana was pivotal in deciphering the Genetic code, showing how sequences of nucleotides correspond to specific amino acids.
- Meselson and Stahl demonstrated the Semi-conservative mode of DNA replication, where each new DNA molecule retains one original strand and one new strand.
Based on these explanations, the correct matching is:
| List I | List II | ||
| A | Frederick Griffith | III | Transformation |
| B | Francois Jacob & Jacques Monod | IV | Lac operon |
| C | Har Gobind Khorana | I | Genetic code |
| D | Meselson & Stahl | II | Semi-conservative mode of DNA replication |
Therefore, the correct answer is: A-III, B-IV, C-I, D-II.
Approach Solution -2
A. Frederick Griffith is known for his discovery of the phenomenon of transformation, so it matches with III. Transformation.
B. Francois Jacob & Jacque Monod are known for their work on the Lac operon, so it matches with IV. Lac operon.
C. Har Gobind Khorana is credited with deciphering the genetic code, so it matches with I. Genetic code.
D. Meselson & Stahl are famous for their experiment demonstrating the semi-conservative model of DNA replication, so it matches with II. Semi-conservative mode of DNA replication.
Thus, the correct answer is (2) A-III, B-IV, C-I, D-II.
Top Questions on DNA Replication
- If Meselson and Stahl’s experiment is continued for 80 minutes (till III generation), then what would be the ratio of DNA containing \( N^{15}/N^{15} : N^{15}/N^{14} : N^{14}/N^{14} \) in the medium?
- CBSE CLASS XII - 2025
- Biology
- DNA Replication
- In DNA replication, which enzyme is responsible for unwinding the double helix and separating the DNA strands?
- MHT CET - 2025
- Biology
- DNA Replication
- Which of the following helps in opening of DNA double helix in front of replication fork?
- AP PGECET - 2024
- Biotechnology
- DNA Replication
- In a chromosome, there is a specific DNA sequence, responsible for initiating replication. It is called as:
- NEET (UG) - 2024
- Biology
- DNA Replication
- Statement 1: Avery, McLeod, and McCarty discovered the semi-conservative nature of DNA.
Statement 2: Meselson and Stahl used \( \text{E. coli} \) to demonstrate the semi-conservative nature of DNA.- MHT CET - 2024
- Biology
- DNA Replication
Questions Asked in NEET exam
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
- NEET (UG) - 2025
- Moment Of Inertia
- Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs.
- NEET (UG) - 2025
- Animal Physiology
- Given below are two statements:
Statement I: Fig fruit is a non-vegetarian fruit as it has enclosed fig wasps in it.
Statement II: Fig wasp and fig tree exhibit a mutual relationship as the fig wasp completes its life cycle in the fig fruit and the fig fruit gets pollinated by the fig wasp. - An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its gauge pressure drops to 11 atmospheric pressure at temperature \(27^\circ\)C. The mass of the oxygen withdrawn from the cylinder is nearly equal to: [Given, \(R = \frac{100}{12} \text{ J mol}^{-1} \text{K}^{-1}\), and molecular mass of \(O_2 = 32 \text{ g/mol}\), 1 atm pressure = \(1.01 \times 10^5 \text{ N/m}^2\)]
- NEET (UG) - 2025
- Ideal-gas equation and absolute temperature
- A wire of resistance \(R\) is cut into 8 equal pieces. From these pieces, two equivalent resistances are made by adding four of these together in parallel. Then these two are added in series. The net effective resistance of the combination is:
- NEET (UG) - 2025
- Resistance