Question
Upon removal of bacteriophage coats from infected bacterial cells, where was the label for the DNA?
Upon removal of bacteriophage coats from infected bacterial cells, where was the label for the DNA?
Answers
The labelled DNA was found in the genome of the bacteria.
Messelson and Stahl experiment :
Radiolabelled phosphorus present in protein coat of the bacteriophage + E coli cells = radioactivity was found in phage ghost (protein coat of bacteriophage) = protein is not transferred from virus to bacteria, so it is not a genetic material
Radiolabelled sulphur present in genome of the bacteriophage + E coli cells = radioactivity was found in the genome of E coli = DNA was transferred from virus to bacteria so it is the genetic material
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