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NEET Biology question

BiologyMolecular Basis of InheritanceNEET

Which of the following statements about the Hershey and Chase experiment are correct? I. Sulphur is present in proteins but not in DNA. II. Phosphorus is present in DNA but not in protein. III. ³²P will end up in the supernatant after centrifugation. IV. Progeny generation of T2-bacteriophage contain ³²P. V. Progeny generation of T2-bacteriophage contain ³⁵S.

Answer: (D)

Solution

Sulphur occurs in protein (via cysteine/methionine) but not in DNA (I is true), and phosphorus occurs in DNA's phosphate backbone but not in protein (II is true); since ³²P-labelled DNA enters the bacterial cell and is passed on to the phage progeny, the progeny

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Question ID VK-120685