Study the given molecular structure of double-stranded polynucleotide chain of DNA and answer the questions that follow.

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CASE_STUDIESStructure of DNA MoleculeCBSE PYQ3 sub-questions

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In a DNA, the percentage of thymine is 20. What is the percentage of guanine in it ?

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CASE_STUDIESStructure of DNA Molecule

Study the given below single strand of deoxyribonucleic acid depicted in the form of a "stick" diagram with 5' – 3' end directionality, sugars as vertical lines and bases as single letter abbreviations and answer the questions that follow. (a) Name the covalent bonds depicted as (a) and (b) in the form of slanting lines in the diagram. (b) How many purines are present in the given "stick" diagram ? (c) Draw the chemical structure of the given polynucleotide chain of DNA.

CASE_STUDIESStructure of DNA Molecule