Select the correct match of the name of the scientist associated with the given phenomenon

Options

A. `{:((a) , "Matthew Meselson and"F. Stahl , : , "Pisum sativum "):}`
B. `{: ((b) , "Alfred Hershey and "Martha Chase"):}`" , : , TMV
C. `{:((c) , "Alec Jeffreys" , : , "Streptococus pneumoniae"):}`
D. `{:((d) , "Francois Jacob and Jacques Monod" , : , "Lac operon"):}`

Explanation

To solve the question of matching scientists with their associated phenomena, we will evaluate each option step by step.

### Step-by-Step Solution:

1. **Evaluate Option 1: Matthew Meselson and Franklin Stahl**
- These scientists are known for their experiment on DNA replication.
- They demonstrated the semi-conservative nature of DNA replication in 1958.
- The mention of "Pysum Sittivum" (Garden Pea) is incorrect as it is associated with Gregor Mendel, who studied inheritance using this plant.
- **Conclusion**: This option is incorrect.

2. **Evaluate Option 2: Alfred Hershey and Martha Chase**
- These scientists conducted the famous Hershey-Chase experiment in 1952.
- They proved that DNA is the genetic material using the T2 bacteriophage.
- The mention of TMV (Tobacco Mosaic Virus) is misleading, as they did not work with TMV.
- **Conclusion**: This option is incorrect.

3. **Evaluate Option 3: Alec Jeffreys**
- Alec Jeffreys is known as the father of DNA fingerprinting.
- The mention of "Streptococcus pneumoniae" is incorrect because this bacterium was used by Frederick Griffith in his transformation experiments.
- **Conclusion**: This option is incorrect.

4. **Evaluate Option 4: Francois Jacob and Jacques Monod**
- These scientists are known for their work on the lac operon, which is a set of genes responsible for lactose metabolism in bacteria.
- Their work is foundational in understanding gene regulation.
- **Conclusion**: This option is correct.

### Final Answer:
The correct match of the name of the scientist associated with the given phenomenon is **Option 4: Francois Jacob and Jacques Monod** (associated with the lac operon).

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