Class 12BiologyMolecular Basis of Inheritance
DNA Structure (Watson-Crick Model)
DNA is double helix โ two polynucleotide chains wound around each other. Each nucleotide: deoxyribose sugar + phosphate + nitrogenous base. Bases: Purines (Adenine, Guanine) and Pyrimidines (Cytosine, Thymine). Base pairing: A=T (2 H-bonds), GโกC (3 H-bonds). Chargaff's rule: %A=%T, %G=%C. Chains are antiparallel: one 5'โ3', other 3'โ5'.
10 examples
Concept check 1
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on concept check and show the working clearly.
Definition to application 2
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on definition to application and show the working clearly.
Formula warm-up 3
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on formula warm-up and show the working clearly.
Reasoning practice 4
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on reasoning practice and show the working clearly.
Board-style short answer 5
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on board-style short answer and show the working clearly.
Mistake correction 6
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on mistake correction and show the working clearly.
Visual interpretation 7
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on visual interpretation and show the working clearly.
Applied word problem 8
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on applied word problem and show the working clearly.
Revision challenge 9
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on revision challenge and show the working clearly.
Exam recap 10
For Class 12 Biology, explain or solve a dna structure (watson-crick model) question from the chapter "Molecular Basis of Inheritance". Focus on exam recap and show the working clearly.