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Class XII Biology Biotechnology: Principles and Processes 1

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Question 1

The technique by which “Dolly” (sheep) obtained is known as

Question 2

Manipulation of DNA in genetic engineering became possible due to the discovery of

Question 3

Restriction endonucleases are enzymes discovered by Arber and Mathani (1962) and obtained from bacteria only. They are used as microscissors in genetic engineering. They recognise specific sequence of bases at a particular site, usually 4 -6 base pairs and

Question 4

Enzyme used for cutting DNA at specific site in genetic engineering is

Question 5

Hereditary element may be attached to chromosome or found free in cytoplasm is called

Question 6

Retroviruses are implicated as a cause for cancer in humans because they

Question 7

The Taq polymerase enzyme is obtained from

Question 8

Yep denotes

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Oct 17NEET & AIIMS