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What is DNA?
The abbreviation for deoxyribonucleic acid, a substance found in the nucleus of every living cell. It contains the genetic information that causes characteristics to be passed on from parent to child. The single cell of a fertilised egg, which contains DNA from both parents, reproduces itself and becomes a new living being by dividing into two cells, which in turn divide into two, and so on. The DNA in each of these cells ensures that they are all of the same kind.
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