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(A) Frederick Griffith's experiment in $1928$ demonstrated the phenomenon of bacterial transformation,where the $S$-strain (virulent) bacteria transfo

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The chemical nature of the genetic material

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(A) Frederick Griffith's experiment in $1928$ demonstrated the phenomenon of bacterial transformation,where the $S$-strain (virulent) bacteria transformed the $R$-strain (non-virulent) bacteria into virulent ones.However,Griffith could not determine the biochemical nature of the 'transforming principle' that caused this change.It was later identified by Avery,MacLeod,and McCarty as $DNA$.

What could not be determined from Griffith's experiment?

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