Principles of Inheritance and Variation

Chapter 4, Principles of Inheritance and Variation, is from the official NCERT Class 12 Biology textbook (2026-27, Part I). Use the NCERT PDF to study the chapter, then practise related MCQs on MockX. This chapter matters for CBSE Class 12 and NEET Biology.

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NCERT PDF opens on ncert.nic.in

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Opens the official NCERT file. Practice and topic links below go to this same chapter on MockX.

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Ch. 3 Reproductive Health Ch. 5 Molecular Basis of Inheritance

All Class 12 Biology chapters · Class 11 Biology

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FAQs

How do I download NCERT Class 12 Biology Chapter 4 PDF? +

Use the official NCERT PDF link for “Principles of Inheritance and Variation”. It opens the publisher file on ncert.nic.in.

Is Chapter 4 Principles of Inheritance and Variation in the NEET syllabus? +

Yes. “Principles of Inheritance and Variation” is part of the current NCERT Class 12 Biology book used for NEET UG.

Should I only read the PDF or also solve questions? +

Read the NCERT chapter first, including examples and exercises, then practise MCQs on MockX so the same lines become exam-speed recall.

Are Hindi medium books listed? +

This first release links English-medium NCERT textbooks. Hindi editions are published on the same NCERT textbook portal.

NCERT textbooks are published by the National Council of Educational Research and Training. MockX links to official ncert.nic.in files and adds exam-oriented practice. We do not host or modify NCERT PDFs.