- 词典nounbiochemistryDNA (名词)
- a self-replicating material that is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
- the fundamental and distinctive characteristics or qualities of someone or something, especially when regarded as unchangeable:"diversity is part of the company's DNA" · "men just don't get shopping—it's not in our DNA"
Origin1940s: abbreviation of deoxyribonucleic acid. DNA | Definition, Discovery, Function, Bases, Facts, & Structure ...
6 天之前 · 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 …
仅显示来自 britannica.com 的搜索结果recombinant DNA
The possibility for recombinant DNA technology emerged with the discovery …
Genetic Code
genetic code, the sequence of nucleotides in deoxyribonucleic acid and ribonucleic …
Hydrogen Bonds
hydrogen bonding, interaction involving a hydrogen atom located between a pair …
Holliday Junction
The two parent DNA molecules, which have long stretches of similar base …
Gene Editing
Gene editing, the ability to make highly specific changes in the DNA sequence …
Reverse Transcriptase
reverse transcriptase, an enzyme encoded from the genetic material of retroviruses …
Chromatin
Other articles where chromatin is discussed: cell: DNA packaging: …a …
DNA - Wikipedia
DNA is a long polymer made from repeating units called nucleotides. 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). The pair of chain…
Wikipedia · CC-BY-SA 许可下的文字DNA - Definition, Function, Structure and Discovery | Biology …
DNA is a biological macromolecule that carries hereditary information in many organisms. Learn about its functions, structure, discovery and role in replication, …
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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 …
Deoxyribonucleic Acid (DNA) Fact Sheet - National …
2020年8月24日 · DNA is a molecule that contains the biological instructions that make each species unique. Learn about DNA's structure, function, discovery, and role in inheritance and gene expression.
Deoxyribonucleic Acid (DNA) - National Human Genome Research …
2024年11月20日 · 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 …
Introduction: What is DNA? | Learn Science at Scitable - Nature
Learn about the structure, function and inheritance of DNA, the complex molecule that contains all the information necessary to build and maintain an organism. Explore the key concepts, key …
DNA Definition & Meaning - Merriam-Webster
Learn the scientific and medical terms for DNA, the nucleic acid that carries genetic information and is the basis of heredity. See examples, etymology, and related phrases for DNA.
DNA – Definition, Discovery, Structure, Functions,
2023年9月13日 · DNA is a macromolecule that carries genetic information in all living organisms. It has a double-helix structure with complementary base pairing, and performs various functions such as inheritance, protein synthesis, …
Definition of DNA - NCI Dictionary of Genetics Terms - NCI
DNA is the molecule inside cells that contains the genetic information responsible for the development and function of an organism. Learn about the structure, function, and inheritance …
