Which is correct match the phenomenon and its explanation

Options

A. Central dogma-RNA `rarr` RNA DNA `rarr` Protein `rarr` RNA`
B. Reverse transcription - PCR - Many copies of DNA sequence
C. Transcription - Formation of RNA proteins
D. RNA silencing - Use of dsRNA

Answer

To solve the question of matching the phenomenon with its correct explanation, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Identify the Phenomena and Their Explanations**:
- We have four options to consider: Central Dogma, Reverse Transcription, Transcription, and RNA Silencing.

2. **Evaluate the First Option: Central Dogma**:
- The explanation states that "RNA is being synthesized from RNA and DNA from protein."
- This is incorrect. The Central Dogma of molecular biology states that genetic information flows from DNA to RNA to protein. Therefore, this option does not match correctly.

3. **Evaluate the Second Option: Reverse Transcription**:
- The explanation states that it is a polymerase chain reaction where RNA is used to produce DNA.
- While reverse transcription does involve synthesizing DNA from RNA, it is not a polymerase chain reaction (PCR). PCR is a different technique that amplifies DNA. Thus, this option is also incorrect.

4. **Evaluate the Third Option: Transcription**:
- The explanation states that transcription is the copying of a segment of DNA into RNA.
- This is correct; transcription is indeed the process where DNA is transcribed into RNA. However, it does not mention anything about RNA or protein synthesis, making this option partially correct but not matching a phenomenon with its explanation.

5. **Evaluate the Fourth Option: RNA Silencing**:
- The explanation states that RNA silencing (or RNA interference) is a biological response to double-stranded RNA (dsRNA).
- This is accurate; RNA silencing involves the use of dsRNA to trigger gene silencing and antiviral responses. This explanation correctly matches the phenomenon.

6. **Conclusion**:
- The only correct match is the fourth option: RNA Silencing with its explanation regarding the role of dsRNA.

### Final Answer:
The correct match is **RNA Silencing** with the explanation that it is a conserved biological response to double-stranded RNA.

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