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  1. DNA - Wikipedia

    DNA and ribonucleic acid (RNA) are nucleic acids. Alongside proteins, lipids and complex carbohydrates (polysaccharides), nucleic acids are one of the four major types of macromolecules that are essential …

  2. DNA | Definition, Discovery, Function, Bases, Facts, & Structure ...

    Dec 11, 2025 · DNA is an organic chemical of complex molecular structure found in all prokaryotic and eukaryotic cells. It codes genetic information for the transmission of inherited traits.

  3. What is DNA? Definition, Function & Structure - Cleveland Clinic

    Jul 7, 2025 · DNA DNA (deoxyribonucleic acid) is a set of instructions for creating the proteins that make your body work. Two strands of DNA together form a double helix — a bit like a spiral staircase. …

  4. Deoxyribonucleic Acid (DNA) Fact Sheet

    Aug 24, 2020 · Deoxyribonucleic acid (DNA) is a molecule that contains the biological instructions that make each species unique.

  5. What is DNA?: MedlinePlus Genetics

    Jan 19, 2021 · DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone. DNA is the hereditary material in humans and almost all other organisms. Genes are made up of DNA.

  6. DNA Is a Structure That Encodes Biological Information

    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.

  7. How DNA Works: The Code of Life Decoded - sciencenewstoday.org

    May 18, 2025 · DNA is a long, thread-like polymer composed of smaller units called nucleotides. Each nucleotide is made up of three components: a phosphate group, a five-carbon sugar (deoxyribose), …

  8. Simple DNA Explained: What It Is and What It Does

    Aug 5, 2025 · Deoxyribonucleic acid, commonly known as DNA, serves as the fundamental blueprint for all living organisms. This complex molecule contains the instructions that guide the development, …

  9. DNA: Function, structure, and impact on health - Medical News Today

    Aug 26, 2025 · DNA is a molecule found in most cells that holds each person’s unique genetic code. It is responsible for coding proteins, which are essential to cell growth and development.

  10. Definition of DNA - NCI Dictionary of Genetics Terms - NCI

    The molecule inside cells that contains the genetic information responsible for the development and function of an organism. DNA molecules allow this information to be passed from one generation to …