DNA | Definition, Discovery, Function, Bases, Facts, & Structure ...
2024年12月15日 · 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 - Wikipedia
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.
What is DNA? - MedlinePlus
2021年1月19日 · DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).
Deoxyribonucleic Acid (DNA) Fact Sheet - National Human …
2020年8月24日 · 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. Where is DNA found? In organisms called eukaryotes, DNA is found inside a special area of the cell called the nucleus.
DNA Structure and Functions - Science Facts
2023年9月13日 · DNA stands for Deoxyribonucleic acid, a macromolecule that carries genetic information in all living organisms, from the tiniest microorganisms to the most complex multicellular humans. DNA is a fundamental molecule that holds life’s blueprint.
Deoxyribonucleic Acid (DNA) - National Human Genome …
3 天之前 · 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 …
DNA - Definition, Function, Structure and Discovery - Biology …
2019年4月8日 · 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.
The Structure and Function of DNA - Molecular Biology of the …
In this section we examine the structure of the DNA molecule and explain in general terms how it is able to store hereditary information. A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of …
DNA Basics: What is DNA? - The DNA Geek
2018年3月20日 · At the most basic level, DNA is a chemical molecule, a very, very (very) long chemical molecule. It is made up of repeated units strung together like beads on a necklace. These types of molecules are known as polymers in the scientific lingo.
Introduction: What is DNA? | Learn Science at Scitable - Nature
Deoxyribonucleic acid, more commonly known as DNA, is a complex molecule that contains all of the information necessary to build and maintain an organism....