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In the year 1963, the two enzymes respon...

In the year 1963, the two enzymes responsible for restricting the growth of bacteriophage in E. coli were isolated. One of these added methyl groups to DNA, while the other cut DNA. The latter was called

A

restriction endonuclease

B

methylase

C

ligases

D

plasmid

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The correct Answer is:
a
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ARIHANT NEET-BIOTECHNOLOGY : PRINCIPLES AND PROCESSES-Chapter exercises (Taking it together (Assorted Questions of the Chapter for advanced Level Practice ))
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  2. E. coli cloning vector pBR322 contains restriction sites in the region...

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  3. In the year 1963, the two enzymes responsible for restricting the grow...

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  4. A single-stranded DNA or RNA, tagged with a radioactive molecule (pro...

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  5. The genes encoding resistance to antibiotics such as ampicillin, chlor...

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  6. When cut by the same restriction enzyme, the resultant DNA fragments h...

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  7. IN PCR, short primers are added to single stranded DNA molecules in a ...

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  8. A 'genemic library is a term used to describe a

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  9. A molecular probe might be used to

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  10. Main phenomenon on which genetic engineering is based is

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  11. To prevent recirculation of vector DNA and to increase the frequency o...

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  12. Synthetic DNA or sDNA is synthesised in

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  13. In the embryo of cloning Dolly sheep, the fusion is done between

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  14. Molecular cloning is

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  15. Type-I restriction enzyme

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  16. Type-II restriction enzymes are preferred over type-I in cleaving DNA ...

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  17. Restriction enzymes are used in genetic engineering because they

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  18. A fragment of DNA, cut by a restriction enzyme, forms bonds with other...

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  19. It is preferable to use yeast rather than bacteria as recipient cells ...

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  20. Which of the followings is first recombinant DNA produced unintentionl...

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