alleryIn the Hershey-Chase experiment, radioactive sulfur (35S) was used to specifically label which component of the bacteriophage?
AViral DNA
BBacterial DNA
CBacterial protein
DViral protein coat
Answer & Solution
Correct answer: D. Viral protein coat
Protein contains sulfur but DNA does not, so 35S labelled the phage coat.
32P labelled DNA (DNA has phosphorus, protein does not).
Only 32P entered the bacterium, proving DNA is the genetic material.
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