With regard to the experiment described in Figure 9.2, answer the following:
A. List several possible reasons why only a small percentage of the type R bacteria was converted to type S.
B. Explain why an antibody was used to remove the bacteria that are not transformed. What would the results look like, in all five cases, if the antibody/centrifugation step had not been included in the experimental procedure?
C. The DNA extract was treated with DNase, RNase, or protease. Why was this done? (In other words, what were the researchers trying to demonstrate?)