If a bacteriophage having `P^(32)` infects a baterium growing on normal medium then

Options

A. some of the bacteriophages produced shall incorporate `P^(32)`
B. all the newly produced bacteriophages shall incorporate `P^(32)`
C. none of the bacteriophages produced shall incorporate `P^(32)`.
D. none of these

Answer

To solve the question regarding the bacteriophage with phosphorus-32 (P-32) infecting a bacterium growing on normal medium, we will break down the process step by step.

### Step-by-Step Solution:

1. **Understanding Bacteriophage**:
- A bacteriophage is a type of virus that specifically infects bacteria. In this case, the bacteriophage contains DNA that is labeled with radioactive phosphorus-32 (P-32).

**Hint**: Remember that bacteriophages are viruses that target bacteria and can introduce their genetic material into the host.

2. **Infection of Bacterium**:
- When the P-32 labeled bacteriophage infects a bacterium, it injects its DNA into the bacterial cell. The bacterium is growing on a normal medium, which means that the phosphorus in the medium is not radioactive.

**Hint**: Focus on the fact that the bacterium is in a normal medium, which lacks radioactive phosphorus.

3. **DNA Integration and Replication**:
- The bacteriophage's DNA integrates into the bacterial DNA. The replication of DNA is semi-conservative, meaning that each new DNA molecule consists of one old strand and one newly synthesized strand.

**Hint**: Recall the semi-conservative nature of DNA replication, where new strands are formed complementary to the old strands.

4. **Production of New Bacteriophages**:
- As the bacterial cell replicates its DNA, some of the newly produced bacteriophages will incorporate the radioactive P-32 from the original bacteriophage DNA, while others will incorporate normal phosphorus from the medium.

**Hint**: Consider that not all new bacteriophages will be radioactive; some will use the normal phosphorus from the medium.

5. **Conclusion**:
- Therefore, the correct conclusion is that some of the bacteriophages produced will incorporate P-32, while others will not. This leads us to the correct answer.

**Hint**: Look for the option that states "some of the bacteriophages produced shall incorporate P-32," as this reflects the semi-conservative replication process.

### Final Answer:
The correct option is that **some of the bacteriophages produced shall incorporate P-32** due to the semi-conservative nature of DNA replication.