DNA - Wikipedia
DNA is a long polymer made from repeating units called nucleotides. [6] [7] The structure of DNA is dynamic along its length, being capable of coiling into tight loops and other shapes. [8] In all species it is composed of two helical chains, bound to each other by hydrogen bonds.
DNA | Definition, Discovery, Function, Bases, Facts, & Structure ...
Nov 8, 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 Structure - Biology Dictionary
Jan 21, 2021 · What is the Structure of DNA? DNA molecules are polymers, which means they are large molecules made up of many smaller molecules. The small molecules that make up DNA are called nucleotides.
The Structure and Function of DNA - Molecular Biology of the …
DNA encodes information through the order, or sequence, of the nucleotides along each strand. Each base—A, C, T, or G—can be considered as a letter in a four-letter alphabet that spells out biological messages in the chemical structure of the DNA.
What Is DNA?- Meaning, DNA Types, Structure and Functions
The DNA molecule consists of 4 nitrogen bases, namely adenine (A), thymine (T), cytosine (C) and Guanine (G), which ultimately form the structure of a nucleotide. The A and G are purines, and the C and T are pyrimidines.
9.1: The Structure of DNA - Biology LibreTexts
Mar 17, 2022 · The DNA molecule is a polymer of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group. There are four nitrogenous bases in DNA, two …
Deoxyribonucleic Acid (DNA) Fact Sheet - National Human …
Aug 24, 2020 · DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
Biochemistry, DNA Structure - StatPearls - NCBI Bookshelf
Jun 12, 2023 · The sequence of nucleotides that make up a molecule of DNA is referred to as its primary structure. A DNA molecule consists of two chains of polymerized nucleotides running side-by-side, joined together by hydrogen bonds forming between their …
DNA - Definition, Function, Structure and Discovery - Biology …
Apr 8, 2019 · Deoxyribonucleic acid, or DNA, is a biological macromolecule that carries hereditary information in many organisms. DNA is necessary for the production of proteins, the regulation, metabolism, and reproduction of the cell.
Sep 24, 2018 · we look closely at the structure and chemistry of DNA in order to learn how its double-helical architecture allows information to be stored, duplicated, and accessed. Each DNA strand is an alternating copolymer of phosphates and deoxyribose sugars As its name implies, the double helix is composed of two polynucleotide