NEET Biology question
Which of the following statements about Griffith's experiment is correct? I. S-strain has a capsule. II. Mouse will die if injected with living S-strain. III. Mouse will die if injected with living R-strain. IV. Transforming principle is associated with the capsule of S-strain. V. Transformation of R-strain into S-strain can take place in a test-tube.
Answer: (C)
Solution
The virulent S-strain does have a polysaccharide capsule (I), and injecting live S-strain kills the mouse (II); transformation of R-strain into S-strain can indeed also be demonstrated in a cell-free test-tube system
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