1. #8  Hershey and Chase Experiment Zabrina Shvartsman Ashley Sroka Brendan Weiss

2. EXPERIMENT They wanted to see if PROTEIN or DNA was responsible for hereditary action

3. EXPERIMENT CON’T. Meaning, they wanted to know if you inherited your hair and eye color from your parents because of the PROTEIN or the DNA

4. EXPERIMENT CON’T. They used bacteriophages (viruses that invade bacteria) to discover the solution

5. EXPERIMENT CON’T. PROTEINS injected with sulfur – When they replicated, the new bacteriophages weren’t radioactive PROTEINS are not responsible for hereditary action

6. EXPERIMENT CON’T. DNA injected with phosphorous – When they replicated, the new bacteriophages were radioactive DNA is responsible for hereditary action

7. EXPERIMENT CON’T. http://nortonbooks.com/college/biology/anima tions/ch12a02.htm http://nortonbooks.com/college/biology/anima tions/ch12a02.htm

8. Question # 8 8. 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? a. Radioactive phosphorous b. Radioactive nitrogen c. Radioactive sulfur d. Radioactive carbon

9. Question # 8 con’t. You would use sulfur Proteins contain sulfur, and not phosphorous When the Hershey-Chase experiment tested the proteins for hereditary action, their replicates were not radioactive