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Which of the following statement is incorrect?

A. The neuclosides obtained from DNA all contain 2-deoxy-d-ribose as their sugar component

B. Adenine,guanine, cytosine and thyamine are the four heterocyclic base of DNA neucleosides.

C. The heterocyclic base of a nucleotide is attached through an N-glycoside linkage to Cl of the ribose or deoxyribose unit, and the lingkage is always the α - linkage

D. The central portion of nucleotide is a five monosaccharides known as furanosides

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সঠিক উত্তরঃ C. The heterocyclic base of a nucleotide is attached through an N-glycoside linkage to Cl of the ribose or deoxyribose unit, and the lingkage is always the α - linkage

Explanation: