NEET UG (National Eligibility cum Entrance Test) · Biology · Chapter 5
Principles of Inheritance and Variation
Principles of Inheritance and Variation is a Std. XII Biology chapter in the NEET UG (National Eligibility cum Entrance Test) syllabus with 3.6% topic weightage. Includes chapter-mapped MCQs, previous-year coverage, and revision priorities.
Position in syllabus
Chapter 5
of 38 in Biology
Weightage
3.6%
of the Biology syllabus
Practice bank
213 MCQs
chapter-tagged, exam-aligned
Why Principles of Inheritance and Variation matters for NEET
Principles of Inheritance and Variation is a Std. XII Biology chapter in the NEET UG (National Eligibility cum Entrance Test) syllabus (5 of 38 in this subject). It carries 3.6% of the NEET UG (National Eligibility cum Entrance Test) Biology topic weightage. RankNiti currently tags 213 MCQs to this chapter. Most scoring happens when NCERT diagrams, definitions, and exception lines can be recalled under time — not when the chapter is only “read once.”
How to revise Principles of Inheritance and Variation
- Read the Std. XII NCERT/board chapter for Principles of Inheritance and Variation once for structure — headings, diagrams, and summary points — without stopping to memorise.
- On the second pass, close the book and write the diagram labels and exception lines from Principles of Inheritance and Variation, then check the textbook.
- Attempt a RankNiti chapter test for Principles of Inheritance and Variation and review every miss against the exact textbook line.
- In the week before a full NEET UG (National Eligibility cum Entrance Test) mock, only re-solve the questions you got wrong in Principles of Inheritance and Variation — do not reread the whole chapter unless accuracy is still low.
Common mistakes in Principles of Inheritance and Variation
- Highlighting Principles of Inheritance and Variation without reproducing diagrams from memory.
- Skipping NCERT summary and examplar-style assertion items until a full mock exposes them.
- Treating a high chapter score on an untimed quiz as exam-ready recall.
Frequently asked questions
Is Principles of Inheritance and Variation important for NEET UG (National Eligibility cum Entrance Test)?
Yes — Principles of Inheritance and Variation carries an official topic weightage of 3.6% in the NEET UG (National Eligibility cum Entrance Test) Biology syllabus, so it is a scoring chapter for aspirants targeting a top rank.
Which class is Principles of Inheritance and Variation from — Std. XI or Std. XII?
Principles of Inheritance and Variation appears in the Std. XII Biology syllabus for NEET UG (National Eligibility cum Entrance Test).
How many practice questions are available for Principles of Inheritance and Variation?
RankNiti's NEET UG (National Eligibility cum Entrance Test) question bank has 213 chapter-tagged MCQs for Principles of Inheritance and Variation, drawn from previous-year papers and Balbharati/NCERT-aligned drills.
How should I revise Principles of Inheritance and Variation for NEET UG (National Eligibility cum Entrance Test)?
Start with the Std. XII textbook chapter, list the sub-topics, then solve chapter-mapped MCQs on RankNiti in three rounds — first at your own pace, then timed, and finally under mock-test conditions. This is one of 38 chapters in the Biology syllabus, so budget time proportional to its weightage.

