alleryThe Hershey-Chase experiment used radioactive isotopes to label
Aboth DNA and protein with ³²P
BDNA with ¹⁴C and protein coat with ³H
CDNA with ³⁵S and protein coat with ³²P
DDNA with ³²P and protein coat with ³⁵S
Answer & Solution
Correct answer: D. DNA with ³²P and protein coat with ³⁵S
DNA contains phosphorus but no sulphur
protein contains sulphur (in cysteine, methionine) but no phosphorus.
³²P labels DNA, ³⁵S labels protein.
After infection, only ³²P entered the bacteria — so DNA is the genetic material.
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