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Question : Label the parts of the DNA in the diagram given below. Explain the structural briefly. Structure of DNA: |
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Answer» Solution :DNA is the hereditary material as it contains the genetic information. DNA is a large molecule, consisting of millions of nucleotides. Each nucleotide consists of three compounds. (a) A sugar molecule - Deoxy Ribose sugar (b) A nitrogenous base [Purines and Pyrimidines] (i) Purines (Adenine and Guanine) (ii) Pyrimidines (CYTOSINE and THYMINE) (c ) A phosphate GROUP Nucleoside and Nucleotide: Nucleoside = Nitrogen base + sugar Nucleotide = Nucleoside + Phosphate The nucleotides are formed ACCORDING to the purines and pyrimidines present in them.
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