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What exactly is DNA?
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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...
May 23, 2024 · Definition. 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.
DNA is an abbreviation of deoxyribonucleic acid. It is a type of macromolecule (a very large molecule—one composed of hundreds of thousands of atoms) known as a nucleic acid. Nucleic acids are made of smaller molecules known as nucleotides, which are made of a phosphate, a sugar, and nitrogen bases.
- DNA Structure
- Discovery of DNA
- Importance of Knowing The Genetic Code
A single DNA molecule is shaped as a double helix made up of two strands of nucleotides that are bonded together. Each nucleotide consists of a nitrogen base, a sugar (ribose), and a phosphate group. The same 4 nitrogen bases are used as the genetic code for every strand of DNA, no matter which organism it comes from. The bases and their symbols ar...
The German biochemist Frederich Miescher first observed DNA in 1869, but he did not understand the function of the molecule. In 1953, James Watson, Francis Crick, Maurice Wilkins, and Rosalind Franklin described the structure of DNA and proposed how the molecule could code for heredity. While Watson, Crick, and Wilkins received the 1962 Nobel Prize...
In the modern era, it's possible to sequence the entire genetic code for an organism. One consequence is that differences in DNA between healthy and sick individuals can help identify a genetic basis for some diseases. Genetic testing can help identify whether a person is at risk for these diseases, while gene therapy can correct certain problems i...
Google Classroom. 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.
In short, DNA is a complex molecule that consists of many components, a portion of which are passed from parent organisms to their offspring during the process of reproduction.
Apr 24, 2024 · Deoxyribonucleic Acid (biology/genetics definition): A helical double-stranded nucleic acid that is crucial for containing the genetic information for cell growth, division, and function . Abbreviation: DNA. Variant: desoxyribonucleic acid. Synonyms: deoxyribose nucleic acid; desoxyribose nucleic acid.
