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DNA | Definition, Discovery, Function, Bases, Facts, Structure . . . 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 polymer, a spiral consisting of two DNA strands wound around each other
DNA Structure - Biology Dictionary 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 discovered in 1953 by James Watson, Francis Crick, and Rosalind Franklin
DNA structure (article) | Khan Academy DNA (d eoxyribo n ucleic a cid) is a nucleic acid biomolecule made up of subunits called nucleotides Nucleotides make up an organism’s genetic information—certain stretches of nucleotides in a DNA molecule are genes, which encode the proteins that affect an organism’s traits In addition, some stretches of nucleotides are involved in regulating when and how strongly those genes are
DNA Structure and Functions - Science Facts 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 complete double helix rotation measures approximately 34 Angstroms (Å) in length
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
What Does DNA Stand For? Definition, Function Structure 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