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In the Hershey-Chase experiment, radioactive sulfur (35S) was used to specifically label which component of the bacteriophage?
A{'text': 'Viral DNA', 'label': 'A'}
B{'text': 'Bacterial DNA', 'label': 'B'}
C{'text': 'Bacterial protein', 'label': 'C'}
D{'text': 'Viral protein coat', 'label': 'D'}
Answer & Solution
Correct answer: D. {'text': 'Viral protein coat', 'label': 'D'}
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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