Which one of the following is TRUE? A codon ________.
A) consists of four nucleotides
B) can code for up to four different amino acids
C) extends from one end of a tRNA molecule
D) is the basic unit of the genetic code

Question

Quizplus · Accepted Answer

A codon is the basic unit of the genetic code, consisting of a sequence of three nucleotides that specifies the incorporation of a specific amino acid into a protein. It does not consist of four nucleotides or code for up to four different amino acids. It also does not extend from one end of a tRNA molecule, as that would be the anticodon.

Which One of the Following Is TRUE? a Codon ________