The Hershey and Chase experiments,in which radioactive phosphorus (32P)and radioactive sulfur (35S)were used,demonstrated that ____.
A) DNA labeled with 35S and proteins labeled with 32P can be traced over the course of an experiment
B) DNA labeled with 32P is transferred from the bacteriophage to the virus
C) proteins labeled with 35S become deactivated and unable to be transferred
D) bacteriophages transfer their DNA, not their coat proteins, into their hosts
E) DNA may be the hereditary material, although bacteriophages transfer both DNA and proteins into their hosts

Question

The Hershey and Chase experiments,in which radioactive phosphorus (32P)and radioactive sulfur (35S)were used,demonstrated that ____.  
A) DNA labeled with 35S and proteins labeled with 32P can be traced over the course of an experiment
B) DNA labeled with 32P is transferred from the bacteriophage to the virus
C) proteins labeled with 35S become deactivated and unable to be transferred
D) bacteriophages transfer their DNA, not their coat proteins, into their hosts
E) DNA may be the hereditary material, although bacteriophages transfer both DNA and proteins into their hosts

Quizplus · Accepted Answer

The Hershey and Chase experiments used radioactive phosphorus (32P) to label DNA and radioactive sulfur (35S) to label proteins. Their results showed that only the DNA (labeled with 32P) entered the bacterial cells during infection, demonstrating that DNA is the genetic material transferred by bacteriophages, not the protein coat.

The Hershey and Chase Experiments,in Which Radioactive Phosphorus (32P)and Radioactive