Q:
Polynucleotide chain of DNA contains
Answer & Explanation
Answer: A) a nitrogenous base, deoxyribose sugar and phosphate group
Explanation: The two DNA strands are called polynucleotidesbecause they are composed of simpler monomer units called nucleotides. Eachnucleotideis composed of one of four nitrogen-containingnucleobases (cytosine, guanine, adenine or thymine), a sugar called deoxyribose, and a phosphate group.
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