Write the conclusion drawn by Griffith at the the end of his experiment with Streptococcus pnemoniae.

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Solution

Griffith concluded that the type II-R had been "transformed" into the lethal III-S strain by a "transforming principle" that was somehow part of the dead III-S strain bacteria. Today, we know that the "transforming principle" Griffith observed was the DNA of the III-s strain bacteria.

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Q. Describe Frederick Griffith's experiment on Streptococcus pneumoniae. Discuss the conclusion he arrived at.

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Q. (a) Explain the experiment performed by Griffith on Streptococcus pneumoniae. What did he conclude from this experiment?
(b) Name the three scientists who followed up Griffiths experiments.
(c) What did they conclude and how?

In his transforming experiment on mice, Griffith has taken two strains of streptococcus pneumonia, R-stain and s-strain. In which of the following case mice will remain alive?

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