CSIR NET Life Science Unit 8 MCQs with Answers

Here below are 15 core Inheritance Biology topics across five parts. Choose Easy, Medium or Difficult for each topic to practise 15 questions per level. Answers show the correct option and explanation immediately.

Part 1: Topics 1–3

1. Mendelian Inheritance and Genetic Terminology

15 questions per difficulty level · Select a level

2. Extensions of Mendelian Genetics

15 questions per difficulty level · Select a level

3. Chromosome Theory and Sex-linked Inheritance

15 questions per difficulty level · Select a level

Part 2: Topics 4–6

4. Linkage and Genetic Recombination

15 questions per difficulty level · Select a level

5. Gene Mapping and Pedigree Analysis

15 questions per difficulty level · Select a level

6. Chromosomal Aberrations

15 questions per difficulty level · Select a level

Part 3: Topics 7–9

7. Mutation and DNA Damage

15 questions per difficulty level · Select a level

8. DNA Repair and Genome Stability

15 questions per difficulty level · Select a level

9. Population Genetics and Hardy–Weinberg Equilibrium

15 questions per difficulty level · Select a level

Part 4: Topics 10–12

10. Quantitative Genetics

15 questions per difficulty level · Select a level

11. Microbial Genetics

15 questions per difficulty level · Select a level

12. Extranuclear and Organelle Inheritance

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Part 5: Topics 13–15

13. Molecular Markers and Genetic Variation

15 questions per difficulty level · Select a level

14. Human Genetics and Genetic Disorders

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15. Genetic Analysis and Experimental Approaches

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Frequently Asked Questions

How does incomplete dominance differ from codominance?

Incomplete dominance produces an intermediate heterozygous phenotype; codominance expresses both allelic products or traits.

What does a recombination frequency of 10% suggest?

It corresponds to approximately 10 map units for a short genetic interval, although recombination frequencies can underestimate longer distances.

How is mitochondrial inheritance usually transmitted in humans?

Mitochondrial DNA is predominantly inherited maternally.

What is the difference between penetrance and expressivity?

Penetrance describes whether a genotype produces a phenotype; expressivity describes its degree or severity.

Why are test crosses useful?

Crossing an individual with a homozygous recessive partner can reveal otherwise hidden dominant-phenotype genotypes.

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