DNA molecule rotating. DNA (deoxyribonucleic acid) is the molecule that stores an individual's genetic information. It is formed of two helices of sugar-phosphates wound around each other, linked by base pairs. Genetic information is stored in the sequences of the bases down each strand. Each base can only bind to its complementary base: adenine to thymine, and cytosine to guanine. As such, each strand of the double helix can be used to recreate the information on the other. Atoms are colour-coded: carbon is grey, phosphorus orange, oxygen red, nitrogen cyan and sulphur pink. Hydrogen atoms are omitted for clarity. | |
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Credit: | Science Photo Library / Andrade, Ramon / 3dciencia |
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