Question

A mutated DNA sequence synthesizes the same protein, as the nonmutated sequence do. This is an example of

• A. Deletion
• B. Insertion
• C. Missense mutation
• D. Nonsense mutation
• E. Silent mutation

Answer 1

The correct option is E Silent mutation

Missense mutationA mutation causing the no change in the amino acid and hence no effect on the function of the protein is called as a silent mutation. Deletion and insertion alter the encoded amino acid and thereby result in the synthesis of altered protein. A point mutation that changes a codon specifying a different amino acid is called as a missense mutation. A nonsense mutation introduces a premature stop codon by addition or deletion of the base, in the transcribed mRNA and causes synthesis of truncated protein. Thus, the correct answer is option E.