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Hace 6 días · DNA structure, showing the nucleotide bases cytosine (C), thymine (T), adenine (A), and guanine (G) linked to a backbone of alternating phosphate (P) and deoxyribose sugar (S) groups. Two sugar-phosphate chains are paired through hydrogen bonds between A and T and between G and C, thus forming the twin-stranded double helix of the ...
- DNA
DNA is the material that carries all the information about...
- Holliday Junction
Holliday junction, cross-shaped structure that forms during...
- Chromatin
Other articles where chromatin is discussed: cell: DNA...
- mtDNA
In Homo sapiens: Bodily structure …types of mitochondrial...
- Bases
Other articles where base is discussed: nucleic acid: Basic...
- Retroviruses
Reverse transcriptase transcribes RNA into deoxyribonucleic...
- Human Genome
Human genome, all of the approximately three billion base...
- Pyrimidines
Pyrimidine, any of a class of organic compounds of the...
- DNA
DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes. These chromosomes are made up of thousands of shorter segments of DNA, called genes.
21 de ene. de 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. Each nucleotide contains a phosphate group, a sugar molecule (called deoxyribose ), and a nitrogenous base. A nucleotide.
Now let’s consider the structure of the two types of nucleic acids, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). 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 \(\PageIndex{2}\)).
A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together ( Figure 4-3 ).
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. Both chains are coiled around the same axis, and have the same pitch of 34 ångströms (3.4 nm).
Deoxyribonucleic acid, more commonly known as DNA, is a complex molecule that contains all of the information necessary to build and maintain an organism. All living...
