DNA is a polymer of nucleotides that forms a double helix and carries genetic information for all living organisms and many viruses. Learn about the chemical structure, base pairing, replication, transcription and translation of DNA, as well as its evolution and uses in technology.

Learn about the structure of DNA, the double helix, the nucleotides, the base pairs, and the discovery of DNA by Watson, Crick, and Franklin. Compare DNA with RNA and understand DNA replication.

Learn about the meaning, types, structure and function of DNA, the genetic material of all living organisms. Explore the diagram, discovery and replication of DNA with examples and videos.

A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together (Figure 4-3).

Learn about the definition, discovery, structure, and functions of DNA, the molecule that carries genetic information in all living organisms. See how DNA is composed of nucleotides, base pairs, and grooves, and how it regulates protein synthesis, replication, and evolution.

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 9.1.2 9.1. 2). There are four types of nitrogenous bases in DNA.

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 the material through which genetic information is stored and transmitted is a direct result of its elegant structure.

DNA structure and function. Nucleic acids. DNA. Molecular structure of DNA. Antiparallel structure of DNA strands. Leading and lagging strands in DNA replication. Speed and precision of DNA replication. Levels of DNA organization. Telomeres and single copy DNA vs repetitive DNA. DNA repair 1. DNA repair 2.

DNA is the molecule that holds the instructions for growth and development in every living thing. Its structure is described as a double-stranded helix held together by complementary...