
DNA - Wikipedia
Within eukaryotic cells, DNA is organized into long structures called chromosomes. Before typical cell division, these chromosomes are duplicated in the process of DNA replication, providing a …
DNA | Definition, Discovery, Function, Bases, Facts, & Structure ...
5 days ago · 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 …
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 …
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.
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 …
Molecular structure of DNA (video) | Khan Academy
DNA, short for deoxyribonucleic acid, consists of nucleotides forming a double helix structure. Nucleotides contain a phosphate group, deoxyribose sugar, and a nitrogenous base. The …
Deoxyribonucleic Acid (DNA)
2 days 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 …
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 …
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.
DNA Structure: Exploring the Double Helix and Its Components
May 25, 2025 · By examining its key components—nitrogenous bases, base pairs, and the sugar-phosphate backbone—this article provides a detailed look into the anatomical and physical …