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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 …

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

    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 9, 2025 · 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 …

  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 · What is DNA? 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.

  6. DNA: Function, structure, and impact on health

    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.

  7. Decoding Our DNA: The Blueprint of Life Explained

    Jul 27, 2025 · Inside every cell in your body—skin cells, brain cells, even the ones in your eyelashes—is a copy of this script. This molecule, deoxyribonucleic acid or DNA, is the …

  8. 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 …

  9. DNA and Mutations - Understanding Evolution

    A mutation is a change in DNA, the hereditary material of life. An organism’s DNA affects how it looks, how it behaves, and its physiology. So a change in an organism’s DNA can cause …

  10. Discovery of the structure of DNA (article) | Khan Academy

    Today, the DNA double helix is probably the most iconic of all biological molecules. It's inspired staircases, decorations, pedestrian bridges (like the one in Singapore, shown below), and …