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  1. DNA - Wikipedia

    The double-stranded structure of DNA provides a simple mechanism for DNA replication. Here, the two strands are separated and then each strand's complementary DNA sequence is …

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

    Oct 18, 2025 · Each strand of a DNA molecule is composed of a long chain of monomer nucleotides. The nucleotides of DNA consist of a deoxyribose sugar molecule to which is …

  3. DNA Structure - Biology Dictionary

    Jan 21, 2021 · DNA molecules consist of two DNA strands, which are twisted around one another to form a spiral shape known as the double helix. The double helix structure of DNA was first …

  4. DNA function & structure (with diagram) (article) | Khan Academy

    Chromosomal DNA consists of two DNA polymers that make up a 3-dimensional (3D) structure called a double helix. In a double helix structure, the strands of DNA run antiparallel, meaning …

  5. DNA: Properties, Structure, Composition, Types, Functions

    Aug 3, 2023 · Deoxyribonucleic acid (DNA) is the heredity material found in humans and all living organisms. It is a double-stranded molecule and has a unique twisted helical structure.

  6. Deoxyribonucleic Acid (DNA) - National Human Genome

    1 day ago · DNA is made of two linked strands that wind around each other to resemble a twisted ladder — a shape known as a double helix. Each strand has a backbone made of alternating …

  7. DNA – Definition, Discovery, Structure, Functions, & Labeled …

    Sep 13, 2023 · The two DNA strands (polymers) wound around each other in a right-handed double helix that looks like a twisted ladder or a spiral-shaped staircase. Each helix turn or …

  8. 9.1 The Structure of DNA - Concepts of Biology | OpenStax

    Now let’s consider the structure of the two types of nucleic acids, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The building blocks of DNA are nucleotides, which are made up of …

  9. DNA Structure - Visible Body

    Each strand of DNA is a polynucleotide composed of units called nucleotides. A nucleotide has three components: a sugar molecule, a phosphate group, and a nitrogenous base.

  10. 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 …