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Bridget Dooling, Connor Forlini, Emily O’Donnell, Staci Schaffling.

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Presentation on theme: "Bridget Dooling, Connor Forlini, Emily O’Donnell, Staci Schaffling."— Presentation transcript:

1 Bridget Dooling, Connor Forlini, Emily O’Donnell, Staci Schaffling

2 Background  Hershey and Chase were testing two hypotheses that were both competing against each other.  DNA was the genetic material  Protein was the genetic material.

3 DNA vs. Protein  Early biologist thought that proteins carried genetic information  Was thought that it was protein over DNA because proteins are more complex

4 What caused the experiment  In 1944, an experiment took place that suggested that DNA was the genetic material.  Science community was uncertain on which was true  This is why the Hershey and Chase experiment took place, they wanted to determine the exact outcome of whether it was DNA or proteins that carried the genetic information

5 Hershey Chase Experiment Video Explanation  Watch This! Watch This!

6 You want to use a radioactive tracer that will label only the protein in an RNA virus. Assume the virus is composed of only a protein coat and an RNA core. Which of the following would you use? Be sure to explain your answer referring to the Hershey Chase Experiment.

7 The choices  A) Radioactive P  B) Radioactive N  C) Radioactive S  D) Radioactive C

8 The Right answer!!  A) radioactive P  The answer is radioactive P because when you look at the experiment radioactive Phosphorus made the DNA radioactive. Radioactive Sulfur made the outer shell of the virus(Phage) radioactive but not DNA.  We can exclude Radioactive Carbon and Nitrogen from the beginning because they were not used in the experiment


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