Genetics: Analysis and Principles 5th Edition by Robert Brooker

Exercise 36

Does the experiment of Figure 9.5 rule out the possibility that RNA is the genetic material of T2 phage Explain your answer. If it does not, could you modify Hershey and Chase's approach to show that DNA and not RNA is the genetic material of T2 bacteriophage Note: It is possible to specifically label DNA or RNA by providing bacteria with radiolabeled thymine or uracil, respectively.FIGURE 9.5 Evidence that DNA is the genetic material of T2 bacteriophage. Starting materials: The starting materials were E. coli cells and two preparations of radiolabeled T2 phage. One phage preparation had phage proteins labeled with 35 S, and the other preparation had phage DNA labeled with 32 P.