Remember: AUG = Start codon/Methionine; UAA/UAG/UGA = Stop codons; UUU = Phenylalanine; UGG = Tryptophan.
Always associate codon sequences with their specific amino acids or function.
Use mnemonics for start and stop codons to avoid mistakes.
1. AUG is the start codon in mRNA which codes for Methionine — so A \(\rightarrow\) IV.
2. UAA is a stop codon or termination codon — so B \(\rightarrow\) III.
3. UUU codes for Phenylalanine — so C \(\rightarrow\) II.
4. UGG codes for Tryptophan — so D \(\rightarrow\) I.
5. Therefore, the correct matching is A-III, B-IV, C-II, D-I. Hence the correct answer is (3) A-III, B-IV, C-II, D-I.