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MDCAT Biology QUESTION #11278
Question 1
A mutation that changes a single nucleotide but does NOT change the amino acid sequence of the protein is called:
  • Nonsense mutation
  • Missense mutation
  • Silent mutation✔️
  • Frameshift mutation
Correct Answer Explanation
A silent mutation is a point mutation that changes a single nucleotide but results in the same amino acid due to the degeneracy (redundancy) of the genetic code. The protein function remains unchanged.