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#Question id: 5760


The fluctuation test of Luria and Delbruck (studying resistance to bacteriophge T1 infection) established that

#XL - R Botany
  1. T1 phage was a mutagen.

  2. Mutations could arise prior to the time they were selected

  3. The mutation rate varies greatly from experiment to experiment.

  4. In E. coli the number of mutants per clone was relatively constant.


Answer:- Option(s): 3


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