Anticodon occurs in : - DASH

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Anticodon occurs in :

DNA

r-RNA

t-RNA

m-RNA

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Step-by-Step Explanation 1. Introduction In the process of protein synthesis (translation), genetic information is conveyed from DNA to messenger RNA (mRNA), which is then used to assemble amino acids in a specific order to form proteins. Transfer RNA (tRNA) plays an essential role as it matches the codons of mRNA with the proper amino acids via the anticodons present in its structure. 2. Understanding the Anticodon The anticodon is a sequence of three nucleotides in the tRNA molecule. This sequence is complementary to the codon on the mRNA strand. When the mRNA codon interacts with the tRNA anticodon, it ensures that the correct amino acid is positioned in the growing polypeptide chain. In other words, the anticodon-codon pairing ensures the accuracy of protein synthesis. 3. Role of tRNA Adaptor Function: tRNA serves as an adaptor by carrying specific amino acids to the ribosome, where protein synthesis occurs. Recognition via Anticodon: Each tRNA has an anticodon that pairs specifically with a corresponding codon on the mRNA, ensuring the correct sequence of amino acids. Structure: tRNA typically has a cloverleaf-like structure. One end of the molecule carries the amino acid, while another part contains the anticodon loop that binds to the mRNA codon. 4. Why Other Options Are Incorrect DNA: Though DNA carries the genetic information, it does not have an anticodon region. Anticodons are only present in tRNA, which is part of the translation machinery. rRNA (Ribosomal RNA): rRNA is a structural and catalytic component of ribosomes but does not possess anticodons. mRNA (Messenger RNA): mRNA contains codons, not anticodons. Codons are the three-base sequences that code for specific amino acids. 5. Conclusion Therefore, the anticodon is exclusively found in tRNA, enabling it to recognize specific codons on the mRNA during protein synthesis. This mechanism precisely aligns the amino acids in the correct sequence to form functional proteins.

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