Which trinucleotide trinucleotide sequence terminates polypeptide elongation across standard genetic codes?
Answer and explanation
Correct answer: B. UAA, UAG, or UGA pathway
The standard stop (nonsense) codons are UAA (ochre), UAG (amber), and UGA (opal). They do not code for amino acids and are recognized by release factors rather than tRNAs. AUG is the start codon.
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