Phage Lab Report

Phage is a virus that consists of a protein coat that surrounds the core of DNA. When phage DNA enters the host cell it directs phage reproduction. DNA is the molecule that is responsibility for heredity. In this experiment, phage was added to E.coli in a radioactive medium. Phages were used to demonstrate that DNA is the genetic material. The DNA molecule is surrounded by a protein coat. So, when phages infect bacteria, they will attach to the surface of the bacterium. When this happens, they inject DNA into the cell. The protein coat remained on the outside of the cell.
The phages were produced in a radioactive medium that resulted in a phage population with Sulfur labeled proteins. There was no radioactive label in this DNA. The phages