In 1944, Oswald Avery, Colin Macleod, and Maclyn Mccarty revisited Griffith's experiment and concluded that the transforming material was pure DNA, not protein or RNA.
What is the significance of this experiment?
The significance of this experiment is that it illustrates that the proteins were not the genetic material but DNA is the substance that causes bacterial transformations.
All three investigators found that DNA extracted from a virulent strain of the bacterium Streptococcus pneumonia also known as Pneumococcus genetically transformed an avirulent strain of the organism into a virulent form.
Therefore, it is well described above.
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