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Which observation was made by Avery, Macleod, and McCarty?

(a) DNA is a duplex molecule

(b) DNA can be taken up from medium

(c) DNA can denature at high temperatures

(d) DNA is more stable than RNA

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Correct answer is (b) DNA can be taken up from medium

To explain: According to the experiments performed by Avery, Macleod, and McCarty; it came to be known that bacterial cells can take up the DNA present in the medium. This formed the basis of cloning plasmids in the bacterial cells.

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