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15 de may. de 2024 · DNA, organic chemical of complex molecular structure found in all prokaryotic and eukaryotic cells. It codes genetic information for the transmission of inherited traits. The structure of DNA was described in 1953, leading to further understanding of DNA replication and hereditary control of cellular activities.
DNA is a long polymer made from repeating units called nucleotides. The structure of DNA is dynamic along its length, being capable of coiling into tight loops and other shapes. In all species it is composed of two helical chains, bound to each other by hydrogen bonds.
Learn how DNA is a polymer of nucleotides with four bases (A, T, G, C) that form a double helix structure. Understand how DNA stores and expresses genetic information and how enzymes interact with it.
9 de oct. de 2019 · None of this stopped Watson and Crick from speculating about how the components of the DNA molecule — the four nucleotide bases adenine, guanine, thymine and cytosine, connected to a backbone of ...
21 de ene. de 2021 · Learn about the structure of DNA, the double helix, the nucleotides, the base pairs, and the discovery by Watson, Crick, and Franklin. Compare DNA with RNA and understand DNA replication.
DNA and its building blocks. DNA is made of four types of nucleotides, which are linked covalently into a polynucleotide chain (a DNA strand) with a sugar-phosphate backbone from which the bases (A, C, G, and T) extend. A DNA molecule is composed of two (more...)
The building blocks of DNA are nucleotides, which are made up of three parts: a deoxyribose (5-carbon sugar), a phosphate group, and a nitrogenous base (Figure \ (\PageIndex {2}\)). There are four types of nitrogenous bases in DNA.
