A sequence of how many nucleotides in messenger RNA makes a codon for an amino acid? (Manipal 2007)

Proteins are the building block of the body. These are basically the number of amino-acid which are arranged sequentially. These are produced by the triplet codons. Therefore, three nucleotides in messenger RNA make a codon for an amino acid. This codon is unique and universal. It is also called the genetic code. Thus, the correct option is (a) Three