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If the anticodon of a tRNA is **3'-UAC-5'**, the corresponding mRNA codon is (read 5'→3'):
A5'-AUG-3' (start, methionine)
B5'-CAU-3'
C5'-TAC-3'
D5'-UAC-3'
Answer & Solution
Correct answer: A. 5'-AUG-3' (start, methionine)
Anticodon 3'-UAC-5' pairs antiparallel with codon 5'-AUG-3'. Note A pairs with U, U with A, C with G. This is the initiator tRNA (methionine).
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