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How does a transformed bacterial cell obtain new DNA? See Section 8.5 (Page 186) . transfer...

How does a transformed bacterial cell obtain new DNA? See Section 8.5 (Page 186) .

transfer of a duplicated plasmid between from one bacterial cells to another
the uptake of naked DNA from the surrounding environment
transfer of bits of DNA by a virus that infects the bacterial cell
One bacterial cell transfers DNA to another through a physical bridge called a pilus.
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I think 2nd is the correct answer because first we make bacterial cell competent so that it can take dna from environment .

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