DNA (video) | Structure of DNA and RNA | Khan Academy
https://www.khanacademy.org/science/what-are-living-things-made-of/xf9343b6caff766ff:the-molecular-basis-of-inheritance/xf9343b6caff766ff:structure-of-dna-and-rna/v/dna-deoxyribonucleic-acid
WEBAbout. Transcript. DNA, or deoxyribonucleic acid, is the molecular basis for inheritance, discovered in the mid-1800s and understood in 1953 with the double helix structure. Composed of a sugar-phosphate backbone and base pairs (adenine-thymine, guanine-cytosine), DNA stores genetic information, replicates, and expresses traits.
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