Agenetic mutation resulted in a change in the sequence of amino acids of a protein, but the function of the protein was not changed. which statement best describes the genetic mutation? a.) it was a silent mutation in a coding region of dna that caused a change in the dna of the organism. b.) it was a nonsense mutation in a non-coding region of dna that caused a change in the dna of the organism. c.) it was a nonsense mutation in a non-coding region of dna that caused a change in the phenotype of the organism.