DNA - Wikipedia
WEBSimplified diagram. Deoxyribonucleic acid (/ diːˈɒksɪˌraɪboʊnjuːˌkliːɪk, - ˌkleɪ -/ ⓘ; [ 1 ]DNA) is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses.
DNA | Definition, Discovery, Function, Bases, Facts, & Structure
WEB3 days ago · DNA, organic chemical of complex molecular structure found in all prokaryotic and eukaryotic cells. It codes genetic information for the transmission of inherited traits. The structure of DNA was described in 1953, leading to further understanding of DNA replication and hereditary control of cellular activities.
What Is DNA?- Meaning, DNA Types, Structure and Functions
WEBThe following diagram explains the DNA structure representing the different parts of the DNA. DNA comprises a sugar-phosphate backbone and the nucleotide bases (guanine, cytosine, adenine and thymine).
DNA Structure and Functions - Science Facts
WEBSep 13, 2023 · What is the DNA molecule. What does it stand for. Who discovered it. Where is it found. What is it made of. Learn its shape and functions with a diagram.
9.1: The Structure of DNA - Biology LibreTexts
WEBMar 17, 2022 · The DNA molecule is a polymer of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group. There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine). A DNA molecule is composed of two strands.
DNA Structure - Biology Dictionary
WEBJan 21, 2021 · DNA (deoxyribonucleic acid) molecules are nucleic acids, which are the information-carrying molecules of the cell. DNA molecules are polymers and are made up of many smaller molecules, called nucleotides. Each nucleotide contains a phosphate group, a sugar molecule, and a nitrogenous base.
Zooming in on DNA Structure - Visible Body
WEBDNA is a macromolecule consisting of two strands that twist around a common axis in a shape called a double helix. The double helix looks like a twisted ladder—the rungs of the ladder are composed of pairs of nitrogenous bases ( base pairs ), and the sides of the ladder are made up of alternating sugar molecules and phosphate groups.
9.1 The Structure of DNA - Concepts of Biology - OpenStax
WEBNow 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 three parts: a deoxyribose (5-carbon sugar), a phosphate group , and a nitrogenous base ( Figure 9.3 ).
Discovery of DNA Structure and Function: Watson and Crick
WEBThe 3-dimensional double helix structure of DNA, correctly elucidated by James Watson and Francis Crick. Complementary bases are held together as a pair by hydrogen bonds.
DNA Is a Structure That Encodes Biological Information
WEBWhat do a human, a rose, and a bacterium have in common? Each of these things — along with every other organism on Earth — contains the molecular instructions for life, called deoxyribonucleic...