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  1. A mutation at one base of the first codon, of a gene, produces a non-functional protein. Such a mutation is called
    1. nonsense mutation
    2. missense mutation
    3. frameshift mutation
    4. reverse mutation
Correct Option: B

A mutation bringing about early stoppage of polypeptide formation is called nonsense mutation. Frame shift mutation is a type of gene mutation where the reading of codons is changed due to insertion or deletion of nucleotides.



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