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    Structure of DNA and its replication

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    What happened to Rosalind Franklin with respect to her career following the discovery of the chemical nature of DNA?

    Describe the structure of DNA in detail. Provide an additional image or images which clearly illustrate this structure. Reference your source.

    With your knowledge of the chemical nature of DNA, briefly summarize how DNA replicates itself during interphase of the cell cycle.

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    Solution Summary

    DNA is chemically made up of Deoxyribose sugar , Nitrogenous bases (Adenine, Guannine, Cytosine & Thymine) and Phosphate.The backbone of the DNA strand is made from alternating phosphate and sugar residues.The sugar in DNA is the pentose (five carbon) sugar 2-deoxyribose. The sugars are joined together by phosphate groups that forms phosphodiester bonds between the third and fifth carbon atoms of adjacent sugar rings.

    DNA replication is semi-conservative. It is enzyme driven process in which a new copy of DNA is formed having half portion contributed by the previous DNA and another half formed by complimentary base pairing.