
Computer Graphic Of Dna Structure

by Science Photo Library
Title
Computer Graphic Of Dna Structure
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
The double helix. Computer graphic illustration of the structure of DNA. The two helices of the structure are formed by alternating phosphate and sugar groups in the 'backbones'. At each sugar is a nucleic acid base (adenine, thymine, cytosine or guanine), pointing inward. Each base in one helix is fixed to a base in the opposite (or complimentary) helix by hydrogen bonding. In DNA, adenine in one helix always bonds to thymine in the other, likewise cytosine always bonds to guanine. This equivalence (known as Chargaff's Rule) is the key to DNA replication.
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September 30th, 2018
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