Answer and Explanation:
The three nucleotide bases on an mRNA molecule (called a codon) provide a code for one amino acid. The sequence of nucleotide bases in an mRNA molecule forms a code that specifies the sequence of amino acids in a protein. This code is known as the genetic code. Each codon corresponds to a specific amino acid, and the sequence of codons in an mRNA molecule specifies the sequence of amino acids in a protein.