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Class 12 Biology — Chapter 5: Molecular Basis of Inheritance
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Free NCERT-aligned multiple-choice practice for Class 12 Biology, Chapter 5 (Molecular Basis of Inheritance). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 90.
Sample questions
Q1Easy
DNA double helix model proposed by:
A.Watson and Crick✓ correct
B.Mendel
C.Darwin
D.Pasteur
Why
1953, with Franklin's X-ray data.
Q2Medium
Codon is:
A.Triplet of bases coding for one amino acid✓ correct
B.Single base
C.Whole gene
D.Protein
Why
64 codons total.
Q3Hard
PCR is used to:
A.Amplify DNA in vitro✓ correct
B.Sequence proteins
C.Cut DNA
D.Modify RNA only
Why
Polymerase Chain Reaction.
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