Which of the Following Nucleotide Triplets Best Represents a Codon

Question

Which of the following nucleotide triplets best represents a codon?
A)a triplet separated spatially from other triplets
B)a triplet that has no corresponding amino acid
C)a triplet at the opposite end of tRNA from the attachment site of the amino acid
D)a triplet in the same reading frame as an upstream AUG
E)a sequence in tRNA at the 3' end

Accepted Answer

A codon is a nucleotide triplet that specifies a particular amino acid or a stop signal during protein synthesis. A triplet in the same reading frame as an upstream AUG is necessary for translation to occur because the triplet will be recognized by a corresponding tRNA carrying the appropriate amino acid.