Q. If DNA is digested by endonucleases in four sites giving rise to fragments of which two are equal in length how many bands would be seen after electrophoresis?

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Q. The fluorescent dye such Ethidium is used for visualizing DNA. How do ethidium binds to DNA?

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Q. Pulse field gel electrophoresis separates DNA molecules of size ___________

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Q. Which of the following will migrate faster?( The condition is the molecular weight of the following is equal.)

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Q. Agarose can be extracted from which of the following?

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Q. Electrophoresis cannot be used to separate _______________

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Q. Which of the following is not a character of polyacrylamide gel?

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Q. Pulse field gel electrophoresis was developed by ____________

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Q. What is the condition required to observe B form of DNA?

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Q. What is the condition required to observe A form of DNA?

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Q. How many bases are there in per turn of the B form of DNA?

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Q. Which of the following is not a character of A DNA?

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Q. How many bases are there in per turn of the A form of DNA?

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Q. Which of the following is not a character of B form of DNA?

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Q. In a right handed DNA the glycosidic bond is in syn configuration.

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Q. In the Z form of DNA the fundamental repeating unit is __________

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Q. What is the factor responsible for the left-handed helical conformation in Z form of DNA?

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Q. In higher salt concentration the DNA helix assumes the right-handed conformation.

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Q. The two strands of cccDNA can be easily separated without any breakage of bonds.

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Q. Passing of one strand through the other in order to get separated is known as _______

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