Reverse transcription is depicted as

Options

A. DNA `to` RNA `to` Protein
B. RNA `to` DNA `to` Protein
C. RNA `to` DNA `to` RNA ` to ` Protein
D. RNA `to` Protein `to` RNA

Answer

To solve the question regarding the depiction of reverse transcription, we can break down the process step by step.

### Step-by-Step Solution:

1. **Understanding Reverse Transcription**:
- Reverse transcription is the process where RNA is converted into complementary DNA (cDNA). This is the opposite of the usual transcription process, where DNA is transcribed into RNA.

2. **Identifying the Enzyme**:
- The enzyme responsible for reverse transcription is called reverse transcriptase. This enzyme is an RNA-dependent DNA polymerase, meaning it synthesizes DNA using an RNA template.

3. **Process Overview**:
- In reverse transcription, the sequence starts with RNA, which is then converted into cDNA. This cDNA can subsequently be transcribed back into RNA, and finally, the RNA can be translated into protein.

4. **Sequence of Events**:
- The correct sequence of events in reverse transcription is:
- RNA → cDNA (reverse transcription)
- cDNA → RNA (transcription)
- RNA → Protein (translation)

5. **Choosing the Correct Option**:
- Based on the above understanding, the correct depiction of reverse transcription is:
- RNA to DNA to RNA to Protein.
- Therefore, the correct answer is option three: RNA to DNA to RNA to Protein.

### Final Answer:
The correct depiction of reverse transcription is **RNA to DNA to RNA to Protein** (Option 3).

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