Which scientist conducted an experiment with ³²P and ³⁵S labelled phages for demonstrating that DNA is the genetic material ?

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O.T. Avery, C.M. MacLeod and M. McCarty

F. Griffith

James D. Watson and F.H. C. Crick

A. D Hershey and M.J. Chase

answer is B.

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Detailed Solution

The scientists who conducted the experiment with 32P and 35S labeled phages to demonstrate that DNA is the genetic material in bacteriophages were Alfred Hershey and Martha Chase.
1. James D. Watson and Francis H.C. Crick are credited with proposing the double helix structure of DNA.
3. Frederick Griffith made a significant contribution to the fi eld of microbiology with his experiments on bacterial transformation.
4. Oswald T. Avery, Colin MacLeod and McCarty (1944) conducted a series of groundbreaking experiments and
concluded that the biochemical nature of Griffith’s transforming principle is DNA.

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