DNA
The code of life
Summary
DNA (deoxyribonucleic acid) is the double-helix molecule that carries the genetic information of all living things.
In depth
DNA is a double helix formed by two strands wound around each other, built from four different bases (adenine, thymine, guanine, cytosine). The bases pair up as A-T and G-C. If all the DNA in a human cell were stretched out, it would be about 2 metres long. Genes encode the instructions needed to make proteins.
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