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Which type of point mutation results in a codon that still codes for the same amino acid?

easy MCQ 1 mark Class 12 · Biology · Molecular Basis of Inheritance
  1. Nonsense mutation
  2. Missense mutation
  3. Silent mutation
  4. Frameshift mutation
Answer
Silent mutation.

The correct answer is Silent mutation. — Therefore, the answer is silent mutation.

Step-by-step solution

  1. Identify the four types of point mutations: nonsense, missense, silent, and frameshift.
  2. Recognise that a silent mutation changes a codon but the new codon codes for the same amino acid.
  3. Since the question asks for a mutation that leaves the amino acid unchanged, the correct choice is silent.
  4. Therefore, the answer is silent mutation.
Common mistake: Confusing a missense mutation with a silent mutation

Concept tested: Types of point mutations

Published · How this solution was prepared and checked

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