MP Board · Class 12 · Biology · Molecular Basis of InheritanceThe backbone of a DNA strand is composed of:
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Total Attempts: 8
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Step-by-Step Solution
The DNA backbone is made up of alternating sugar and phosphate molecules linked by phosphodiester bonds.
Detailed Options Breakdown
Option : Sugar and Nitrogenous base
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Molecular Basis of Inheritance.
Option 1: Sugar and Phosphate (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Nitrogenous base and Phosphate
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Molecular Basis of Inheritance.
Option 3: Purines and Pyrimidines
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Molecular Basis of Inheritance.
💡 Study Guide: This question tests core syllabus concepts from Molecular Basis of Inheritance. For formulas, key summaries, and mock exam reference guides, read the full Molecular Basis of Inheritance Revision Notes.