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DNA Repair Mechanisms MCQs for Competitive Exams

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DNA Repair Mechanisms MCQs for Competitive Exams

Practice with answers, explanations, and exam-focused revision notes.

18 MCQs Page 1

Topic Notes: DNA Repair Mechanisms

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

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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1
What is the term for spontaneous mutations that arise in non-reproductive body cells?
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2
What is the fundamental cause of a point mutation?
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3
Which type of radiation is responsible for the formation of thymidine dimers in DNA?
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4
Which of the following chemical compounds acts as a base analog capable of inducing mutations in DNA?
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5
Which of the following mutagens is classified as non-ionizing radiation?
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6
What are the potential biological consequences of a genetic mutation?
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7
What is the term for a genetic mutation that changes a wild-type allele into a mutant allele?
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8
How are mutagens defined in the context of genetics?
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9
Which internal agents within an organism may influence mutagenic effects?
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10
Which nitrogenous bases are primarily affected by the chemical mutagen hydroxylamine?
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