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  4. In Griffith's transforming principle, if heat-killed S - strain is injected into mice, then:

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Q. In Griffith's transforming principle, if heat-killed S - strain is injected into mice, then:

NTA AbhyasNTA Abhyas 2020Molecular Basis of Inheritance

Solution:

Frederick Griffith has done experiments on bacteria Streptococcus pneumonia. This bacteria causes pneumonia.
Step 1 S -strain injected into the mice Mice die
Step 2 R -strain injected into the mice Mice live
Step 3 Heat killed S -strain injected into the mice Mice live
Step 4 Heat killed S -strain + R -strain injected into the mice Mice die