Structure of DNA

The video tutorial explores the discovery and structure of nucleic acids, focusing on DNA and RNA. It begins with the historical identification of nuclein and the introduction of nucleic acids by Richard Altman. The tutorial explains the components of nucleotides, including nitrogenous bases, sugars, and phosphoric acid, and distinguishes between DNA and RNA. It covers the types of bases, purines and pyrimidines, and their pairing rules. The video also discusses the formation of polynucleotides, Chargaff's rules, and the DNA double helix model proposed by Watson and Crick. Finally, it describes the different forms of DNA, such as B, A, and Z DNA, and their structural characteristics.

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