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Question

In Griffith’s transformation experiment, the conversion of R strain to S strain was due to:



A
Transfer of transforming principle from live R strain to heat-killed S strain bacteria
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B
Uptake of naked DNA from medium by heat-killed S strains
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C
Transfer of transforming principle from heat-killed S strains to live R strains
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D
Uptake of transforming principle from medium by heat-killed S strains to become live S strains.
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Solution

The correct option is C Transfer of transforming principle from heat-killed S strains to live R strains

The transforming principle, later identified as DNA, passed on from the heat-killed S strains, enabled the R strains to synthesise a smooth polysaccharide capsule and become virulent.


Biology

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