Explain through the Watson-Crick model, the secondary structure exhibited by the nucleic acids.​

ANSWER:

Nucleic acids display a wide variety of secondary structures. For example, the Watson-Crick model. It proposes that the DNA exists as a double helix structure, wherein the two strands of the polynucleotides run in the opposite direction. Its backbone is formed by the sugar-phosphate-sugar chain where in the nitrogen bases are proposed almost perpendicular to this backbone, facing inwards. A and G of one strand base pairs with T and C respectively on the other strand. Between A and T there are two hydrogen bonds and between G and C, there are three hydrogen bonds wherein each strand appears as a helical staircase. One complete turn of the helical strand has ten base pairs.

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