Principles of Inheritance MCQ for NEET 2026

Master Principles of Inheritance and Variation with 500+ free MCQs covering Mendelian genetics, linkage and recombination, sex determination, mutations, and chromosomal disorders for NEET preparation.

500+

Questions

10-12%

NEET Weightage

Hard

Difficulty

Chapters

Start Practicing Principles of Inheritance and Variation MCQs

NCERT Chapters Covered

Mendel's Laws

Linkage and Recombination

Sex Determination

Mutation

Chromosomal Disorders

Reference: NCERT Class 12 Biology, Chapter 5

Important Topics for NEET

Law of DominanceLaw of SegregationIndependent AssortmentIncomplete DominanceCodominanceMultiple AllelesLinkageCrossing OverSex-Linked InheritanceAutosomal DisordersAneuploidy and Polyploidy

Sample Questions

Q1. In a dihybrid cross, the phenotypic ratio in F2 generation is

Answer: 9:3:3:1

Q2. Colour blindness is inherited as a sex-linked recessive trait. If a carrier woman marries a normal man, the probability of their son being colour blind is

Answer: 50%

Q3. The frequency of recombination between two linked genes is

Answer: Directly proportional to the distance between them

Q4. Down syndrome is caused by

Answer: Trisomy of chromosome 21

Why Practice Principles of Inheritance and Variation MCQs for NEET?

Principles of Inheritance and Variation is one of the most important topics for NEET Biology, with a weightage of 10-12%. Mastering this topic through regular MCQ practice can significantly boost your NEET score. Our free Principles of Inheritance and Variation MCQ practice includes questions from NCERT textbooks and previous year NEET papers.

How to Score Well in Principles of Inheritance and Variation

Focus on understanding concepts from NCERT thoroughly
Practice diagram-based questions regularly
Solve previous year NEET questions from this topic
Review your mistakes and weak areas consistently
Use our spaced repetition system for better retention

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Sample Questions

Q1. In a dihybrid cross, the phenotypic ratio in F2 generation is

Answer: 9:3:3:1

Q2. Colour blindness is inherited as a sex-linked recessive trait. If a carrier woman marries a normal man, the probability of their son being colour blind is

Answer: 50%

Q3. The frequency of recombination between two linked genes is

Answer: Directly proportional to the distance between them

Q4. Down syndrome is caused by

Answer: Trisomy of chromosome 21

Why Practice Principles of Inheritance and Variation MCQs for NEET?

How to Score Well in Principles of Inheritance and Variation

Focus on understanding concepts from NCERT thoroughly

Practice diagram-based questions regularly

Solve previous year NEET questions from this topic

Review your mistakes and weak areas consistently

Use our spaced repetition system for better retention