DNA probes are copied from inRNA molecule with the help of :

Options

A. DNA polymerase
B. RNA polymerase
C. Reverse transcriptase
D. Taq polymerase

Answer

To answer the question, "DNA probes are copied from an RNA molecule with the help of:", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Type of DNA**:
- The DNA we are referring to in this context is cDNA, which stands for complementary DNA.

2. **Defining cDNA**:
- cDNA is synthesized from mRNA (messenger RNA) and is double-stranded. It serves as a copy of the mRNA template.

3. **Process of Synthesis**:
- The process of converting RNA (specifically mRNA) into cDNA is known as reverse transcription.

4. **Role of Enzyme**:
- The enzyme responsible for this conversion is called reverse transcriptase. This enzyme facilitates the synthesis of cDNA from the mRNA template.

5. **Conclusion**:
- Therefore, the correct answer to the question is that DNA probes are copied from an RNA molecule with the help of reverse transcriptase.

### Final Answer:
DNA probes are copied from an RNA molecule with the help of **reverse transcriptase**.

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