By radio·labeling these organisms, Gunther Stent confirmed the double helix structure of DNA proposed (15[1])by Watson and Crick, the former of whom belonged to an informal “group” of American scientists named for these organisms. Seymour Benzer (15[1])identified (15[1])rII (“r-two”) loci (15[1])that caused rapid function of one of these organisms. Mutations in the f·h·u·A gene conferred resistance to one of these organisms contained in the agar of the (*) Luria-Delbrück experiment. (10[2])By plating UV-treated E. coli with its parent strain (10[1])on the same plate, (10[1])Esther Lederberg discovered one of these organisms. Radioactive phosphorus-32 and sulfur-35 were used to label the DNA and proteins in one of these organisms in the Hershey-Chase experiment. (-5[1])For 10 points, T4 and lambda are examples of what viruses that infect bacteria? ■END■ (10[1])