This diagram shows a mutation in part of a gene. Which of the following statements best describes what has occurred? A. A mutation has occurred on the template strand of DNA, but it did not affect the mRNA strand that was transcribed
B. A mutation has occurred on the mRNA strand, which affected the DNA strand that was being replicated
C. The codon on the mRNA strand codes for the same amino acid, so the same protein is produced
D. The codon on the mRNA strand codes for a different amino acid, so a different protein is made