Class 12 Biology Molecular Basis of Inheritance MCQ Questions
MCQ Questions for Class 12 Biology Molecular Basis of Inheritance. Try first, then reveal the answer. These are exam-oriented practice items, not copied board papers.
Practice questions aligned to NCERT topics used in CBSE classrooms. These are original exam-oriented questions for revision — not official CBSE board papers and not a guarantee of any exam question. Always match the textbook issued by your school and the latest PDFs on ncert.nic.in and cbseacademic.nic.in.
Answers opened: 0
Practice set
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. Central dogma
C. DNA as genetic material
D. Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology
Answer
C. DNA as genetic material
Explanation
DNA as genetic material. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q2MCQ1 markEasy
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. Semi-conservative replication
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Genetic code is triplet, degenerate
Answer
A. Semi-conservative replication
Explanation
Semi-conservative replication. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q3MCQ1 markEasy
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. lac operon
B. Every chapter ends with keywords or a summary that is useful for one-mark answers
C. Central dogma
D. Write three points from Molecular Basis of Inheritance in your own words; that is enough for a short-answer start
Answer
C. Central dogma
Explanation
Central dogma. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q4MCQ1 markEasy
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology
B. Use the terms used in the NCERT book; do not replace them with unofficial names
C. Genetic code is triplet, degenerate
D. CBSE often tests a concept by asking a daily-life example from the same chapter
Answer
C. Genetic code is triplet, degenerate
Explanation
Genetic code is triplet, degenerate. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
B. lac operon
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Mix MCQs with short answers so you remember both facts and explanations from Molecular Basis of Inheritance
Answer
B. lac operon
Explanation
lac operon. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q6MCQ1 markEasy
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology
B. Write three points from Molecular Basis of Inheritance in your own words; that is enough for a short-answer start
C. Genetic code is triplet, degenerate
D. Every chapter ends with keywords or a summary that is useful for one-mark answers
Answer
A. Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology
Explanation
Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q7MCQ1 markEasy
Choose the correct statement related to Textbook first in the chapter Molecular Basis of Inheritance.
A. The textbook says the opposite of this statement
B. CBSE often tests a concept by asking a daily-life example from the same chapter
C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
D. Use the terms used in the NCERT book; do not replace them with unofficial names
Answer
C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
Explanation
Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q8MCQ1 markEasy
Choose the correct statement related to Keywords in the chapter Molecular Basis of Inheritance.
A. This happens only in a laboratory and never in daily life
B. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
C. Every chapter ends with keywords or a summary that is useful for one-mark answers
D. Mix MCQs with short answers so you remember both facts and explanations from Molecular Basis of Inheritance
Answer
C. Every chapter ends with keywords or a summary that is useful for one-mark answers
Explanation
Every chapter ends with keywords or a summary that is useful for one-mark answers. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Molecular Basis of Inheritance.
A. This idea is not part of the NCERT chapter
B. Write three points from Molecular Basis of Inheritance in your own words; that is enough for a short-answer start
C. CBSE often tests a concept by asking a daily-life example from the same chapter
D. DNA as genetic material
Answer
C. CBSE often tests a concept by asking a daily-life example from the same chapter
Explanation
CBSE often tests a concept by asking a daily-life example from the same chapter. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q10MCQ1 markModerate
Choose the correct statement related to Diagrams in the chapter Molecular Basis of Inheritance.
A. Use the terms used in the NCERT book; do not replace them with unofficial names
B. The textbook says the opposite of this statement
C. Semi-conservative replication
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Explanation
If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q11MCQ1 markEasy
Choose the correct statement related to Revision in the chapter Molecular Basis of Inheritance.
A. Central dogma
B. Mix MCQs with short answers so you remember both facts and explanations from Molecular Basis of Inheritance
C. Write three points from Molecular Basis of Inheritance in your own words; that is enough for a short-answer start
D. This happens only in a laboratory and never in daily life
Answer
C. Write three points from Molecular Basis of Inheritance in your own words; that is enough for a short-answer start
Explanation
Write three points from Molecular Basis of Inheritance in your own words; that is enough for a short-answer start. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q12MCQ1 markEasy
Choose the correct statement related to Accuracy in the chapter Molecular Basis of Inheritance.
A. DNA as genetic material
B. This idea is not part of the NCERT chapter
C. Use the terms used in the NCERT book; do not replace them with unofficial names
D. Genetic code is triplet, degenerate
Answer
C. Use the terms used in the NCERT book; do not replace them with unofficial names
Explanation
Use the terms used in the NCERT book; do not replace them with unofficial names. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Molecular Basis of Inheritance.
A. Mix MCQs with short answers so you remember both facts and explanations from Molecular Basis of Inheritance
B. The textbook says the opposite of this statement
C. lac operon
D. Semi-conservative replication
Answer
A. Mix MCQs with short answers so you remember both facts and explanations from Molecular Basis of Inheritance
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Molecular Basis of Inheritance. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q14MCQ1 markEasy
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. DNA as genetic material
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. This happens only in a laboratory and never in daily life
D. Genetic code is triplet, degenerate
Answer
A. DNA as genetic material
Explanation
DNA as genetic material. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q15MCQ1 markModerate
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. lac operon
B. DNA as genetic material
C. Semi-conservative replication
D. Every chapter ends with keywords or a summary that is useful for one-mark answers
Answer
C. Semi-conservative replication
Explanation
Semi-conservative replication. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q16MCQ1 markEasy
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. Central dogma
C. Semi-conservative replication
D. Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology
Answer
B. Central dogma
Explanation
Central dogma. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. Genetic code is triplet, degenerate
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Central dogma
Answer
A. Genetic code is triplet, degenerate
Explanation
Genetic code is triplet, degenerate. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q18MCQ1 markEasy
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. Genetic code is triplet, degenerate
B. Write three points from Molecular Basis of Inheritance in your own words; that is enough for a short-answer start
C. lac operon
D. Every chapter ends with keywords or a summary that is useful for one-mark answers
Answer
C. lac operon
Explanation
lac operon. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q19MCQ1 markEasy
Choose the correct statement related to Molecular Basis of Inheritance in the chapter Molecular Basis of Inheritance.
A. Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology
B. lac operon
C. This topic is only for college
D. Semi-conservative replication
Answer
A. Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology
Explanation
Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q20MCQ1 markModerate
Choose the correct statement related to Textbook first in the chapter Molecular Basis of Inheritance.
A. Mix MCQs with short answers so you remember both facts and explanations from Molecular Basis of Inheritance
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. Molecular Basis of Inheritance is an NCERT chapter taught in CBSE Class 12 Biology
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
Explanation
Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 12 · Subject: Biology · Chapter: Molecular Basis of Inheritance · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
FAQs
Are these official CBSE board questions?
No. They are original practice questions aligned to NCERT topics used in CBSE classrooms. Official sample papers are published on cbseacademic.nic.in.
Will these questions appear in the board exam?
Nobody can promise a question. Use them for revision of frequently tested concepts and exam-style practice.
Is the chapter list the latest NCERT list?
Yes, the catalog follows current NCERT textbooks used in CBSE schools (including new middle-stage books such as Ganita Prakash and Curiosity). Always match the book issued by your school.
How should I use the 100 questions?
Try the question first, then tap Show answer. Mix MCQs with long answers. Revise formulas and diagrams from the textbook alongside this set.
Where are NCERT solutions?
Open the NCERT-style practice link on this subject or chapter. For word-for-word textbook exercise answers, use the NCERT book itself; we do not copy solution keys from other websites.
What is the suggested URL pattern?
Hub /cbse/, then /cbse/class-12/, then subject and chapter slugs.
Why is this a separate URL?
So students searching for “MCQ Questions” land on a filtered set, while the chapter page remains the full 100-question bank. Same facts, different search intent.
Today's 3-step path
Follow this loop every day: mixed test, current affairs, then today's subject. A new set arrives tomorrow.
