NEET-UG importance
Mutation and gene expression is a useful scoring area because questions often test direct NCERT wording, process sequence, and the ability to separate close distractors. Keep the revision tight and practice with explanations after each attempt.
How to practice this topic
Read the NCERT section first, mark definitions and examples, then solve MCQs in short sets. After each wrong answer, rewrite the reason in one line so the concept becomes recallable before a mock test.
Practice questions
Due to a mutation that changes a coding codon into a termination codon, such a mutation is known asWhich 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 asWhich mechanism generally causes only a change in gene expression levels?