using-codonanticodon-pairing-rules-determine-which-trna-anticodon-sequence-5-to-

Question

Using codon–anticodon pairing rules, determine which tRNA anticodon sequence (5' to 3') would pair with the mRNA codon 5'-AUG-3'. Show your base-pair reasoning.

Accepted Answer

5'-CAU-3' because the anticodon must be complementary and antiparallel to 5'-AUG-3', so 3'-UAC-5' corresponds to 5'-CAU-3'.

Answer

5'-GTA-3' because DNA base pairing rules apply directly and thymine substitutes for uracil in tRNA anticodons.

Answer

5'-UAC-3' because the anticodon is always shown in the same 3' to 5' orientation as the codon without complementarity adjustments.

Answer

5'-AUG-3' because tRNA anticodons are identical to the mRNA codon sequence in the 5' to 3' orientation to pair without antiparallel orientation.