Protein Synthesis · Botany

Which of the following serves as the 'start codon' for protein synthesis in both nuclear and plastid genomes?

  1. UAA
  2. UGA
  3. AUG
  4. UAG
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Correct answer: AUG

AUG is the universal start codon that codes for Methionine in eukaryotes and N-formylmethionine in prokaryotes/plastids. It establishes the reading frame for the entire mRNA sequence.

Difficulty: Medium Question 4 of 20

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