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Restriction endonucleases...

Restriction endonucleases

A

Are used for in utro DNA synthesis

B

Are synthesized by bacteria as part of defense mechanism

C

Are present in mammalian cells for degradation of DNA when the cells dies

D

Are used in genetic engineering

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The correct Answer is:
bd
(b,d) Restriction endonuclease Eco RI is produced by baacterium Escherichia colistrain RY 13. It cuts DNA at very specific site and is used in genetic engineering
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