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Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?

1. GUU, GCU-Alanine
2. UAG, UGA-Stop
3. AUG, ACG-Start/Methionine
4. UUA, UCA-Leucine

Correct answer: UAG, UGA-Stop

Solution

UAG and UGA are both stop codons, meaning they signal the ribosome to end translation. The other options mismatch codons with amino acids or start signals.

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