Anticodon is an unpaired triplet of bases in an exposed position of

Options

A. mRNA
B. rRNA
C. tRNA
D. sRNA

Explanation

**Step-by-Step Solution:**

1. **Understanding the Anticodon**: An anticodon is a specific sequence of three nucleotides that is complementary to a corresponding codon on mRNA. It plays a crucial role in the translation process during protein synthesis.

2. **Identifying the Location of Anticodons**: Anticodons are found on transfer RNA (tRNA). Each tRNA molecule has a specific anticodon that pairs with a codon on the mRNA strand.

3. **Structure of tRNA**: The tRNA molecule has a characteristic cloverleaf structure. This structure includes several important parts:
- **Acceptor Arm**: The end of the tRNA that binds to the corresponding amino acid.
- **Anticodon Loop**: This is the region of the tRNA that contains the anticodon. It is exposed and allows for base pairing with the codon on the mRNA.
- **T psi C Loop**: This part of the tRNA helps in binding to the ribosome during protein synthesis.

4. **Function of Anticodons**: The primary function of the anticodon is to ensure that the correct amino acid is added to the growing polypeptide chain during translation. The anticodon pairs with the codon on the mRNA, allowing the ribosome to incorporate the correct amino acid.

5. **Conclusion**: Therefore, the answer to the question is that the anticodon is an unpaired triplet of bases found in an exposed position on the tRNA, specifically in the anticodon loop.

**Final Answer**: The anticodon is an unpaired triplet of bases in an exposed position on tRNA.

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