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DNA Repair Mechanisms MCQs for Competitive Exams

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DNA Repair Mechanisms MCQs for Competitive Exams

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Topic Notes: DNA Repair Mechanisms

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DNA Repair Mechanisms MCQs in Biology are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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11
What term describes a permanent alteration in the DNA base sequence of a gene?
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12
What term describes a permanent alteration in the fundamental nucleotide sequence of a gene?
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13
What term describes DNA mutations that involve the alteration of only one or a very small number of nucleotides?
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14
What is the specific term for a point mutation where a purine is replaced by another purine, or a pyrimidine is replaced by another pyrimidine, maintaining the base-pair orientation?
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15
Which of the following best defines a transversion mutation?
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16
A mutation is a biological phenomenon that results in the alteration of which component?
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17
Which branch of biology focuses on the study of DNA molecules within chromosomes to understand the genetic basis of inherited diseases?
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18
Which enzyme class is responsible for the sequential removal of nucleotides from the terminal ends of DNA or RNA molecules?
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