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Transcript
DNA Introduction This guide coincides with a presentation that will introduce you to the microscopic world of DNA. Without the proper arrangement of DNA, you would not be able to see or comprehend this. 1) What did Mendel’s pea plant experiments and observations allow people to do? 2) Which 2 macromolecules did scientists hypothesize could be in control of phenotypes? 3) Which bacteria did Griffith use to conduct his experiments? 4) Give the 2 strains of this bacterium as well as their characteristics. 5) What effect does each have when injected into a mouse? Smooth— Rough— 6) Describe the experiment Griffith set up (all 4 stages) 7) Which of the 4 results is surprising? Why? a. What does this result signify? 8) What did Griffith find when he plated pneumonia from the dead mouse in the 4th trial? 9) What can be concluded from Griffith’s experiment? 10) Describe Avery’s experiment and results 11) What can we conclude from Avery’s experiment? 12) Why did Hershey and Chase use bacteriophage for their experiment? 13) Describe a bacteriophage and draw a picture of one, labeling the protein and DNA components. 14) How did Hershey and Chase differentiate DNA and Proteins? 15) Describe Hershey and Chase’s experiment. 16) Describe the results of Hershey and Chase’s experiment. 17) What conclusions can be drawn from the H.C. experiment? 18) What significant question was now left for scientists to unravel (pun intended).