Final answer:
Genes contain instructions to assemble amino acids into proteins. DNA holds the genetic information necessary to build proteins, and the nucleotide sequence of a gene is translated into an amino acid sequence of the corresponding protein.
Step-by-step explanation:
Most genes contain instructions for assembling amino acids into proteins. DNA holds the genetic information necessary to build proteins, and the nucleotide sequence of a gene is translated into an amino acid sequence of the corresponding protein. Each amino acid is defined within the mRNA by a triplet of nucleotides called a codon.