Q4 of 44 Page 75

Which of the given statements is correct in the context of visualizing DNA molecules separated by agarose gel electrophoresis?

•As electric field is applied, DNA fragment arrange themselves according to the size.


•These DNA fragments are then stained with Ethidium bromide and exposed to UV light.


•The DNA band becomes visible and appears as orange coloured bands.

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Which of the following enzymes catalyse the removal of nucleotides from the ends of DNA?

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The transfer of genetic material from one bacterium to another through the mediation of a viral vector is termed as:

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'Restriction' in Restriction enzyme refers to:

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Which of the following is not required in the preparation of a recombinant DNA molecule?