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Deoxyribonucleic acid ( / diːˈɒksɪˌraɪboʊnjuːˌkliːɪk, - ˌkleɪ -/ ⓘ; [1] DNA) is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses.
3 days ago · 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.
- The Editors of Encyclopaedia Britannica
- Deoxyribonucleic acid (DNA) is an organic chemical that contains genetic information and instructions for protein synthesis. It is found in most ce...
- DNA is made of nucleotides. A nucleotide has two components: a backbone, made from the sugar deoxyribose and phosphate groups, and nitrogenous base...
- The discovery of DNA’s double-helix structure is credited to the researchers James Watson and Francis Crick, who, with fellow researcher Maurice Wi...
- Gene editing today is mostly done through a technique called Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR), adopted from a bac...
- DNA is the master blueprint for life and constitutes the genetic material in all free-living organisms. RNA uses DNA to code for the structure of p...
3 days ago · Deoxyribonucleic acid (abbreviated DNA) is the molecule that carries genetic information for the development and functioning of an organism. DNA is made of two linked strands that wind around each other to resemble a twisted ladder — a shape known as a double helix.
- Eukaryotic Cells
- Prokaryotic Cells
- What Happens When Your Cells Divide?
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Humans and many other organisms have eukaryotic cells. This means that their cells have a membrane-bound nucleus and several other membrane-bound structures called organelles. In a eukaryotic cell, DNA is within the nucleus. A small amount of DNA is also in organelles called mitochondria, which are the cell’s powerhouses. Because there’s a limited ...
Organisms like bacteria are prokaryotic cells. These cells don’t have a nucleus or organelles. In prokaryotic cells, DNA resides in the middle of the cell, called a nucleoid, coiled tightly.
Your body’s cells divide as a normal part of growth and development. Each new cell must have a complete copy of DNA when this happens. To achieve this, your DNA must undergo a process called replication. When this occurs, the two DNA strands split apart. Then, specialized cellular proteins use each strand as a template to make a new DNA strand. Fol...
DNA stands for deoxyribonucleic acid, the molecule that contains the instructions for life. Learn about the structure, function, and importance of DNA, as well as how it relates to health, disease, and aging.
Jan 19, 2021 · DNA stands for deoxyribonucleic acid, the hereditary material in humans and almost all other organisms. DNA is a double helix of base pairs that can replicate and store information for building and maintaining an organism.
Aug 24, 2020 · Deoxyribonucleic acid (DNA) is a molecule that contains the biological instructions that make each species unique. DNA, along with the instructions it contains, is passed from adult organisms to their offspring during reproduction.
Apr 8, 2019 · DNA stands for deoxyribonucleic acid, a biological macromolecule that carries hereditary information in many organisms. Learn about the functions, structure and discovery of DNA, and how it is involved in replication, transcription, mutation and evolution.
