Which of the following could be an RNA codon?

Question

Quizplus · Accepted Answer

RNA codons are made up of three nucleotides, with each nucleotide being one of four nitrogenous bases: adenine (A), guanine (G), cytosine (C), or uracil (U). Only choice C, AAU, contains three nucleotides that could form a valid RNA codon.

Choices A and D both contain the nucleotide thymine (T), which is only found in DNA, not RNA. Choice B contains the nucleotide cytosine (C) but does not have three nucleotides in a row that would form a valid RNA codon.

Which of the Following Could Be an RNA Codon