MP Board · Class 12 · Biology · Molecular Basis of InheritanceIn Griffith's transformation experiment, which strain of Streptococcus pneumoniae caused pneumonia and death in mice?
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Total Attempts: 5
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Step-by-Step Solution
The Smooth (S) strain of Streptococcus pneumoniae has a mucous polysaccharide coat and is virulent, causing pneumonia and death in mice, whereas the Rough (R) strain lacks this coat and is non-virulent.
Detailed Options Breakdown
Option : R-strain (Rough)
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Molecular Basis of Inheritance.
Option 1: S-strain (Smooth) (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Heat-killed S-strain
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Molecular Basis of Inheritance.
Option 3: Mutant non-capsulated strain
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.