18Interpreting the Data 9-19 Most of the 35S was found in the supernatantBut only a small percentage of 32PThese results suggest that DNA is injected into the bacterial cytoplasm during infectionThis is the expected result if DNA is the genetic material9-19
19Figure 10-6 Summary of the Hershey–Chase experiment demonstrating that DNA, and not protein, is responsible for directing the reproduction of phage T2 during the infection of E. coli.
21Figure 10-8 Reconstitution of hybrid tobacco mosaic viruses Figure 10-8 Reconstitution of hybrid tobacco mosaic viruses. In the hybrid, RNA is derived from the wild-type TMV virus, while the protein subunits are derived from the HR strain. Following infection, viruses are produced with protein subunits characteristic of the wild-type TMV strain and not those of the HR strain. The top photograph shows TMV lesions on a tobacco leaf compared with an uninfected leaf. At the bottom is an electron micrograph of mature viruses.