proteins are made of a chain of 20 amino acids & genetic information can be used for making proteins ->  genetic information are used to make proteins with amino acids  genetic information are used to make proteins with amino acids & dna contains the genetic information ->  genetic information in dna are used to make proteins with amino acids  genetic information in dna are used to make proteins with amino acids & a protein made by the dna has an incorrect amino acid -> the genetic information in the dna is incorrect