What type of mutation results in a premature stop codon?

Practice Questions

Q1
What type of mutation results in a premature stop codon?
  1. Missense mutation
  2. Nonsense mutation
  3. Silent mutation
  4. Frameshift mutation

Questions & Step-by-Step Solutions

What type of mutation results in a premature stop codon?
Correct Answer: Nonsense mutation
  • Step 1: Understand what a mutation is. A mutation is a change in the DNA sequence.
  • Step 2: Learn about codons. Codons are sequences of three nucleotides in DNA that code for amino acids.
  • Step 3: Know what a stop codon is. A stop codon signals the end of protein synthesis.
  • Step 4: Identify the types of mutations. There are different types of mutations, including missense, nonsense, and silent mutations.
  • Step 5: Focus on nonsense mutations. A nonsense mutation is a specific type of mutation that changes a codon into a stop codon.
  • Step 6: Understand the effect of a nonsense mutation. When a stop codon appears too early, it results in a truncated (shortened) protein.
No concepts available.
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