NCERT Biology Class 12, Chapter 5

Mutation and gene expression NEET Biology MCQ

Last updated: July 30, 2026

Reviewed by MedQGo Editorial Team | Last updated: July 30, 2026

In a mutation where all codons after the mutation point are shifted, it is known as

Aframeshift mutation

Bdynamic mutation

Cfragment mutation

Dtransition

Correct answer: A. frameshift mutation

Frameshift mutations involve a change in the reading frame of the genetic code due to insertions or deletions that are not multiples of three nucleotides, causing all subsequent codons to be shifted.

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More Mutation and gene expression MCQs

Due to a mutation that changes a coding codon into a termination codon, such a mutation is known as Which of the following is not a term used to describe mutations in structural genes?Huntington gene's first exon shows (CAG)n repeats, with less than 35 repeats considered normal and more than 35 leading to Huntington disease. This mechanism of disease caused by the change in (CAG)n repeat number is known as Which mechanism generally causes only a change in gene expression levels?Which of the following can cause a frameshift mutation?