DNA - Wikipedia
Deoxyribonucleic acid (/ d iː ˈ ɒ k s ɪ ˌ r aɪ b oʊ nj uː ˌ k l iː ɪ k,-ˌ k l eɪ-/ ⓘ; [1] DNA) is a polymer composed of two polynucleotide chains that coil around each other to form a double helix.
DNA | Definition, Discovery, Function, Bases, Facts, & Structure ...
2024年12月15日 · Deoxyribonucleic acid (DNA) is an organic chemical that contains genetic information and instructions for protein synthesis. It is found in most of every organism. DNA is a key part of reproduction in which genetic heredity occurs through the passing down of DNA from parent or parents to offspring. What is DNA made of? DNA is made of .
Deoxyribonucleic Acid (DNA) - National Human Genome …
4 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 …
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.
What Is DNA? Summary, Structure, and Importance - Healthline
2022年2月11日 · DNA, or deoxyribonucleic acid, is fundamental to your growth, reproduction, and health. Read about its basic function and structures.
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.
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 | Learn Science at Scitable - Nature
Deoxyribonucleic acid (DNA) is a molecule that encodes an organism's genetic blueprint. In other words, DNA contains all of the information required to build and maintain an organism.
Deoxyribonucleic acid (DNA) - Definition and Examples - Biology …
2024年4月24日 · Deoxyribonucleic Acid (DNA) is a molecule encoding genetic instructions essential for life, found in all living organisms. It carries the genetic blueprint determining an organism's traits and functions.
Nucleic acid - DNA, Genes, Molecules | Britannica
2024年11月22日 · DNA is a polymer of the four nucleotides A, C, G, and T, which are joined through a backbone of alternating phosphate and deoxyribose sugar residues. These nitrogen-containing bases occur in complementary pairs as determined by their ability to form hydrogen bonds between them.