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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 ...

    Nov 28, 2025 · In 1953 James Watson and Francis Crick, aided by the work of biophysicists Rosalind Franklin and Maurice Wilkins, determined that the structure of DNA is a double-helix …

  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. Biochemistry, DNA Structure - StatPearls - NCBI Bookshelf

    Jun 12, 2023 · The remarkable structure of deoxyribonucleic acid (DNA), from the nucleotide up to the chromosome, plays a crucial role in its biological function. The ability of DNA to function as …

  5. 1.1: The Structure of DNA - Biology LibreTexts

    DNA and RNA are made up of monomers known as nucleotides. The nucleotides combine with each other to form a polynucleotide, DNA or RNA. Each nucleotide is made up of three …

  6. 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.

  7. 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 …

  8. DNA Structure – Chromosomes, Genes, and Traits: An ...

    Describe the structure of DNA. Identify the following: Base, nucleotide, 5’end, 3’end, phosphate, deoxyribose, ribose, major groove, minor groove, double helix. Compare and contrast the …

  9. DNA structure and function - 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 …

  10. The Structure of DNA and RNA – Introductory Biology

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