Which is correcty matched ?

Options

A. Ligase-Breaking DNA strand
B. Flame cells-Roundworms
C. Rous Sarcoma-Revetse transcriptase
D. Thyroxine -Adrenal

Answer

To determine which option is correctly matched, let's analyze each option step by step:

1. **Ligase - Breaking DNA Strand**:
- Ligase is an enzyme that joins two DNA fragments together. It is not responsible for breaking DNA strands. Instead, restriction enzymes are responsible for breaking DNA strands.
- **Conclusion**: This option is incorrect.

2. **Flame Cells - Roundworms**:
- Flame cells are specialized excretory cells found in certain invertebrates, such as flatworms (Platyhelminthes), but they are not present in roundworms (Nematodes).
- **Conclusion**: This option is also incorrect.

3. **Reuss Sarcoma - Reverse Transcriptase**:
- Reuss Sarcoma Virus (RSV) is indeed a retrovirus that causes sarcoma in chickens. It contains reverse transcriptase, which is an enzyme that synthesizes DNA from an RNA template. This process is known as reverse transcription, where RNA is converted into complementary DNA (cDNA) and can be integrated into the host genome.
- **Conclusion**: This option is correct.

4. **Thyroxine - Adrenal**:
- Thyroxine is a hormone produced by the thyroid gland, not the adrenal gland. The adrenal gland produces different hormones, such as cortisol and adrenaline.
- **Conclusion**: This option is incorrect.

**Final Answer**: The correctly matched option is **Reuss Sarcoma - Reverse Transcriptase**.

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