NEET 2011 Biology question

The unequivocal proof of DNA as the genetic material came from the studies on a

(1)Bacterium
(2)Fungus
(3)Viroid
(4)Bacterial virusCorrect

Answer: (4)

Solution

Hershey and Chase (1952) worked on the bacteriophage T2, a virus that infects the bacterium E. coli. They labelled the phage DNA with radioactive P and its protein coat with S. After infection and separation of phage coats by blending and centrifugation, radioactivity from P (DNA) was found inside

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Question ID VK-090712