#8Hershey and Chase Experiment

Zabrina Shvartsman

Ashley Sroka

Brendan Weiss

EXPERIMENT

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

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

EXPERIMENT CON’T.

They used bacteriophages (viruses that invade bacteria) to discover the solution

EXPERIMENT CON’T.

PROTEINS injected with sulfur– When they replicated, the new

bacteriophages weren’t radioactive

PROTEINS are not responsible for hereditary action

EXPERIMENT CON’T.

DNA injected with phosphorous– When they replicated, the

new bacteriophages were radioactive

DNA is responsible for hereditary action

EXPERIMENT CON’T.

http://nortonbooks.com/college/biology/animations/ch12a02.htm

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 phosphorousb. Radioactive nitrogenc. Radioactive sulfurd. Radioactive carbon

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