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