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Molecular Basis of Inheritance question

2022 · Q83
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Molecular Basis of Inheritance question

2022 · Q83

NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1

Against the codon 5' UAC 3', what would be the sequence of anticodon on tRNA?

  1. A
    5' GUA 3'
  2. B
    5' AUG 3'
  3. C
    5' ATG 3'
  4. D
    5' GTA 3'
View written solutionFree

Correct answer: B

In the process of translation, the mRNA codon pairs with the tRNA anticodon to bring the correct amino acid to the growing polypeptide chain. The pairing between the codon and anticodon follows the complementary base-pairing rules, with adenine (A) pairing with uracil (U), and guanine (G) pairing with cytosine (C).

In this case, the mRNA codon is given as 5' UAC 3'. To determine the tRNA anticodon sequence, we must follow the base-pairing rules:

  • The U (uracil) in the codon pairs with A (adenine) in the anticodon.
  • The A (adenine) in the codon pairs with U (uracil) in the anticodon.
  • The C (cytosine) in the codon pairs with G (guanine) in the anticodon.

Therefore, the anticodon sequence on the tRNA would be 5' AUG 3'.

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