Hershey and Chase used which virus to prove that DNA is genetic material and infective part of virus?

Options

A. (a) `T_(2)` phage
B. (b) E. coli
C. (c) TMV
D. (d) `T_(4)` phage

Answer

To answer the question about which virus Hershey and Chase used to prove that DNA is the genetic material and the infective part of the virus, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Experiment**: Understand that the question refers to the famous experiment conducted by Alfred Hershey and Martha Chase in 1952.

2. **Purpose of the Experiment**: Recognize that the main goal of their experiment was to determine whether DNA or protein was the genetic material in viruses.

3. **Virus Used**: Identify the specific virus used in their experiment. Hershey and Chase used a bacteriophage, which is a type of virus that infects bacteria.

4. **Name of the Bacteriophage**: The specific bacteriophage they used is known as T2 phage (also referred to as Enterophage). This virus specifically infects and kills Escherichia coli (E. coli) bacteria.

5. **Conclusion of the Experiment**: The results of their experiment led to the conclusion that DNA is the genetic material, not protein, thus proving that DNA is the infective part of the virus.

6. **Final Answer**: Therefore, the answer to the question is T2 phage.

### Final Answer:
The virus used by Hershey and Chase to prove that DNA is the genetic material and the infective part of the virus is **T2 phage**.

---