Restriction endonucleases

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9.Biotechnology Principals and Process

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Restriction endonucleases

A

Are used for in uitro $ 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 for ligating two $ DNA$ molecules

Solution

(b) Restriction endonuclease $Eco$ $ RI$ is produced by bacterium Escherichia colistrain $ RY$ $ 13.$

Standard 12

Biology

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