Chromosomes and DNA Double Helix


Chromosomes and DNA double helix. A chromosome is a packaged and organized structure containing most of the DNA of a living organism. Deoxyribonucleic acid (DNA) is a molecule that carries most of the genetic instructions used in the development, functioning and reproduction of all known living organisms and many viruses. In molecular biology, the term double helix refers to the structure formed by double-stranded molecules of nucleic acids such as DNA. The double helical structure of a nucleic acid complex arises as a consequence of its secondary structure, and is a fundamental component in determining its tertiary structure. No artist credited, uploaded to NIH site December 29, 2015.


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Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No

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