Q. Breeding of two different true-breeding varieties of plants is called

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Q. Presence of sickle cell anemia lowers incidence rate of which of following diseases?

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Q. The DNA structure was investigated in the year __________

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Q. Nucleotide, basic unit of DNA consists of the sugar _________________

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Q. Purines are a type of nitrogenous bases that consist of _____ ring(s).

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Q. Guanine and adenine are _______________

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Q. A nucleotide has a non-polarized structure.

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Q. Which of the following was discovered by Chargaff’s experiment in 1950?

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Q. Who suggested that DNA composed of three nucleotide strands?

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Q. The helical nature of DNA was revealed by the work of ______________

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Q. The phosphate molecules present on the DNA strand give it a large positive charge.

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Q. Which kinds of forces stabilize the DNA structure?

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Q. What is the width of the DNA double helix?

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Q. Proteins can interact with a DNA molecule by ____________________

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Q. The supercoiled state of DNA was first discovered in the year __________

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Q. Supercoiled DNA is more compact than its relaxed counterpart and therefore __________

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Q. Which of the following is used to visualize DNA molecules in a gel?

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Q. Circular DNAs are negatively supercoiled.

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Q. Etoposide and doxorubicin, the drugs used in Cancer treatment target the enzyme ___________

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Q. The three-dimensional structure of DNA can be described by _________

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