When giving an informal presentation, speakers can best prepare by dressing in a new suit with a fresh haircut.
O creating graphs and maps to show.
adding scientific language to the speech.
O finding a humorous story to use in the opening.

In a series of experiments, hershey and chase radioactively labeled dna and protein in viruses and then used labeled viruses to infect bacteria. hershey and chase's experiments definitively showed that a. dna and not protein is the genetic material. b. dna and protein work together as a cell's genetic material. c. protein and not dna is the genetic material. d. neither dna nor protein act as a cell's genetic material