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Ex-Situ Conservation

The term reco...

Question

The term recombinant DNA refers to

A

DNA of the host cell

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B

DNA with a piece of foreign DNA

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C

DNA with selectable marker

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D

DNA with more than one recognition sites

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Solution

The correct option is B DNA with a piece of foreign DNA
Recombinant DNA (rDNA) is DNA with a piece of foreign DNA.

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Q. How many of the following statements are correct?
I. If a linear DNA molecule is digested with a restriction enzyme at four recognition sites, 4 fragments would be produced.
II. If a closed circular DNA molecule is digested with a restriction enzyme at six recognition sites, 6 fragments would be produced.
III. If a linear DNA molecule is digested with a restriction enzyme at four recognition sites on the DNA, 5 fragments would be produced.
IV. If a closed circular DNA molecule is digested with a restriction enzyme at six recognition sites, 7 fragments would be produced.

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