Will mark brainliest the diagram shows a series of codons in an mrna molecule before and after a genetic mutation. the mutation has caused a uracil nucleotide base, rather than an adenine base, to be used to assemble a protein. the change has resulted in the formation of a stop codon instead of the intended codon for arginine. this has caused the peptide chain to be truncated after the codon in which the mutation occurred. which term best classifies the genetic mutation? a. nonsense mutation b. inversion c. frameshift mutation d. silent mutation