Given below are two statements:
Statement I: In 1928, Frederick Griffith, in a series of experiments with 'Streptococcus pneumoniae, witnessed a miraculous transformation in the bacteria that changed its physical form and had enabled the R strain to synthesise a smooth polysaccharide coat and become virulent.
Statement II: Friedrich Meischer in 1869 first identified DNA as an acidic substance present in nucleus and named it as 'Nuclein'.
In the light of the above statements, choose the most appropriate answer from the options given below:
Text Solution
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DNA as an acidic substance present in nucleus was first identified by Friedrich Meischer in 1869. He named it as 'Nuclein'. Frederick Griffith concluded that the R strain bacteria had somehow been transformed by the heat-killed S strain bacteria. Some 'transforming principle', transferred from the heatkilled S strain, had enabled the R strain to synthesise a smooth polysaccharide coat and become virulent. In 1928, Frederick Griffith, in a series of experiments with Streptococcus pneumoniae (bacterium responsible for pneumonia), witnessed a miraculous transformation in the bacteria.
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