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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 ...

    6 days ago · 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. Deoxyribonucleic Acid (DNA) - National Human Genome Research …

    1 day ago · 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 …

  4. 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 staircase.

  5. Gene expression and regulation | AP®︎/College Biology | Khan …

    Explore the molecular structure of DNA, including its double helix and complementary base pairing. Examine RNA’s single-stranded structure and its role in gene expression. Compare DNA and RNA to …

  6. The Structure of DNA and RNA – Introductory Biology

    There are two types of nucleic acids: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Each of these molecules has a unique structure that enables it to fulfill specific functions within the cell. …

  7. DNA Basics: Nucleotides, Genes, and the Genome - Federal Judicial …

    Deoxyribonucleic acid (DNA) is a complex molecule that contains the genetic code of an organism. It acts as an instruction manual for the operation of each individual cell, and it allows the coordinated …

  8. 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.

  9. What is DNA? - Live Science

    Mar 17, 2023 · What is DNA? Deoxyribonucleic acid, or DNA, is a molecule that contains the instructions an organism needs to develop, live and reproduce.