Molecular Basis of Inheritance
165 CBSE Class 12 Biology past-year questions from 4 papers, 2023 to 2026, with answers and worked solutions.
- Difficulty: 65 easy · 75 moderate · 25 hard.
- Most-asked subtopics: Transcription (41), The DNA (29), Human Genome Project (19).
- Updated 8 October 2026.
#1The DNA
#2The DNA
#3The DNA
#4The DNA
For Questions number 13 to 16 two statements are given – one labelled as Assertion (A) and the other labelled as Reason (R). Answer these questions by selecting the appropriate option given below :#5The DNA
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#6The DNA
#7The DNA
#8The DNA
#9The DNA
#10The DNA
#11The DNA
#12The DNA
#13The DNA
Question number 13 to 16 consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below :#14The DNA
#15The DNA
#16The DNA
#17The DNA
#18The DNA
#19The DNA
#20The DNA
#21The DNA
#22The DNA
#23The DNA
#24The DNA
#25The DNA
#26The DNA
#27The DNA
#28The DNA
#29The DNA
#30The Search for Genetic Material
#31The Search for Genetic Material
#32The Search for Genetic Material
#33The Search for Genetic Material
#34The Search for Genetic Material
For Questions number 13 to 16, two statements are given — one labelled as Assertion (A) and the other labelled as Reason (R). Select the correct answer to these questions from the codes (A), (B), (C) and (D) as given below.#35The Search for Genetic Material
#36The Search for Genetic Material
#37The Search for Genetic Material
#38The Search for Genetic Material
#39The Search for Genetic Material
For Questions number 13 to 16, two statements are given — one labelled as Assertion (A) and the other labelled as Reason (R). Select the correct answer to these questions from the codes (A), (B), (C) and (D) as given below.#40The Search for Genetic Material
#41The Search for Genetic Material
#42Replication
#43Replication
#44Replication
#45Replication
#46Replication
#47Replication
#48Replication
For Questions number 13 to 16, two statements are given – one labelled as Assertion (A) and the other labelled as Reason (R). Select the correct answer to these questions from the codes (A), (B), (C) and (D) as given below.#49Replication
#50Replication
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See all 165 questionsMore chapters in this subject
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- Biotechnology and its Applications112
- Biotechnology: Principles and Processes158
- Ecosystem58
- Evolution93
- Human Health and Disease185
- Human Reproduction119
- Microbes in Human Welfare105
- Organisms and Populations87
- Principles of Inheritance and Variation167
- Reproductive Health62
- Sexual Reproduction in Flowering Plants119