The document discusses DNA and RNA. It notes that DNA contains the genetic instructions needed to develop and function, and is found in the nucleus of cells. During cell division, DNA is copied so each new cell has the same DNA instructions. The document also briefly describes how DNA is transcribed into RNA and how this allows DNA instructions to be read and used to make proteins throughout the cell.

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http://www.schoolarabia.net/ahia2/level5/alkhalia/k
halia_anshtetha1.htm

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