Mutation Types
Mediumbiology
A point mutation replacing one amino acid with another without altering the reading frame is called:
Select the correct option:
Solution
Incorrect! Answer:
Missense
- Point Mutation: A change in a single nucleotide.
- Missense Mutation: The nucleotide change results in a different codon that codes for a different amino acid. This may or may not affect protein function (e.g., Sickle-cell anemia).
- Silent Mutation: The nucleotide change results in a codon that codes for the same amino acid (due to degeneracy/redundancy of the genetic code).
- Nonsense Mutation: The nucleotide change creates a premature stop codon, resulting in a truncated, usually non-functional protein.
- Frameshift: Involves insertion or deletion, altering every subsequent codon.
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About This Question
- Subject
- biology
- Chapter
- genetics and evolution
- Topic
- mutation types
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Missense
- Point Mutation: A change in a single nucleotide.
- Missense Mutation: The nucleotide change results in a different codon that codes for a different amino acid. This may or may not affect protein function (e.g., Sickle-cell anemia).
- Silent Mutation: The nucleotide change results in a codon that codes for the same amino acid (due to degeneracy/redundancy of the genetic code).
- Nonsense Mutation: The nucleotide change creates a premature stop codon, resulting in a truncated, usually non-functional protein.
- Frameshift: Involves insertion or deletion, altering every subsequent codon.
This medium difficulty biology question is from the chapter genetics and evolution, covering the topic of mutation types. It appeared in the 2025 exam.
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