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Tuesday, December 24, 2013
The Hershey-Chase Experiment
This is an image of a _____.
red blood cell
This is a T2 phage, a type of phage that infects
Who demonstrated that DNA is the genetic material of the T2 phage?
Hershey and Chase
Darwin and Wallace
Meselson and Stahl
Watson and Crick
Hershey and Chase did a series of classic experiments demonstrating that DNA is the genetic material of the T2 phage.
The radioactive isotope
P labels the T2 phage's _____.
The T2 phage consists of a protein coat and DNA. It is the DNA that contains P.
Hershey and Chase used _____ to radioactively label the T2 phage's proteins.
Hershey and Chase used radioactive sulfur to label the phage's proteins.
After allowing phages grown with bacteria in a medium that contained
S, Hershey and Chase used a centrifuge to separate the phage ghosts from the infected cell. They then examined the infected cells and found that they contained _____, which demonstrated that _____ is the phage's genetic material.
labeled DNA .... protein
labeled DNA ... labeled protein
labeled protein ... DNA
labeled protein .... protein
labeled DNA ... DNA
Since the phage DNA entered the infected cell, it makes sense that DNA is the genetic material.
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