1.

Explain the role of 35S and 32P in the experiments conducted by Hershey and Chase.

Answer»
  • The viruses/bacteriophages grown on radioactive Sulphur (35S) contained radioactive protein but not radioactive DNA, because DNA does not contain Sulphur. 
  • When these viruses were allowed to infect bacteria, the bacteria did not contain radioactivity, because proteins did not enter the bacteria; hence protein is not the genetic material. 
  • The viruses grown on radioactive phosphorus (32P) contained radioactive DNA, because DNA contains phosphorus and not proteins.
  • When these viruses were allowed to infect the bacteria, the bacteria were radioactive, indicating that DNA is the genetic material that has passed from the virus into bacteria


Discussion

No Comment Found

Related InterviewSolutions