Discovery of DNA Questions

On a separate sheet of paper answer these questions in complete sentences.

1. Describe how a person might use the process of bacterial transformation to transfer traits between species of bacteria (genetic engineering).
2. Heat tends to damage a protein more than it does DNA. What hint was contained in Griffith's experiment that the bacteria's active genetic material is DNA?
3. During what specific part of a cell's life cycle is replication occurring?
4. The X-ray crystallography patterns of DNA indicated the molecule had a uniform diameter. Describe how the physical size of the carbon ring structure of DNA's nitrogenous bases (purines and pyrimidines) lead to Watson and Crick proposing that a purine would H-bond to a pyrimidine.