microbiologist. Griffith observed that the mutant form, non-virulent form, of the bacteria Streptococcus Pnumoniae could be transformed into the normal, virulent form, when injected into mice along with heat killed normal forms. He concluded that somehow the information the dead virulent form had transformed the mutant form into a virulent form. Later on through the works of Avery, Macleod, and McCarty in 1944, it became obvious that DNA is the transforming property and the substance…
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