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
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