Which of the Following is an Example of One Codon

Question

Which of the following is an example of one codon?
A) CATT
B) GCCATT
C) CAG
D) CCGUAA

Accepted Answer

A codon is a sequence of three nucleotides that codes for a specific amino acid in a protein. CAG is an example of one codon because it is composed of three nucleotides. The other options are not examples of one codon; CATT and GCCATT are both longer than three nucleotides and CCGUAA contains six nucleotides, making it two codons.