A) disulphite linkage
B) hydrogen bond
C) phosphodiester bond
D) glycosidic bond
Correct Answer: B
Solution :
Duplex molecule of DNA consists of two ploynucleotide chains twisted arround one another to form a right-handed helix. The backbone of each. polynucleotide strand consists of deoxyoyribose sugar. Alternating with phosphate groups that links the 3 carbon of one sugar to 5 carbon of next.
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