How is isolated gene of interest amplified ? from Biology Biotech

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 Multiple Choice QuestionsShort Answer Type

31. Give the applications of PCR technology.
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32. Why is “Agrobacterium mediated genetic transformation” in plants described as Natural genetic engineering of plants ?
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33. Name the various cloning vectors and explain how a plasmid can be used for genetic engineering.
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 Multiple Choice QuestionsLong Answer Type

34. How is recombinant DNA transferred to host ?
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 Multiple Choice QuestionsShort Answer Type

35.

Make a chart (with diagrammatic representation) showing a restriction enzyme, the substrate DNA on which it acts, the site at which it cuts DNA and the product it produces.

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36. List the steps in the formation of rDNA.
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37. How is isolated gene of interest amplified ?


Gene of Interest is amplified using Polymerase chain reaction. This technique involves three main steps :

(i) Denaturation in which the double-stranded DNA is denatured by using high temperatures

(ii) Primer annealing - in this step  two sets of primers are used that are complementary to the segment of DNA of interest. the lower temperature favors the attachment or annealing of primer to the DNA strands.

(iii) Extension of primers in which DNA polymerase enzyme is used to make copies of DNA . 

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 Multiple Choice QuestionsLong Answer Type

38.

List the features required in vectors that  facilitate cloning . With a suitable diagram show the E.coli cloning vector with  restriction sites.

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 Multiple Choice QuestionsShort Answer Type

39. Explain the importance of (a) ori, (b) ampR and (c) rop in the E. coli vector .
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40. Name any two cloning vectors.
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