Class 12th Biology 2018 Set1 Delhi Board Paper Solution
Question 25
Explain how the biochemical characterisation (nature) of ‘Transforming Principle’ was determined, which was not defined from Griffith’s experiments.
Answer
The Biochemical Characterisation are:
Osward Avery, Colin Macleod and Maclyn McCarty reexplained the Griffiths experiment in invitro culture. When hert killed type bacteria and R type non virulent baacteria both are injected to mice the mice died because R type bacteria is transformed into S type bacteria. They concluded that when Protease and RNase do not affect the transformation when DNase is introduced the process of transformation is inhibited and concluded that DNA is a genetic material.
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