What is dna? Where can we find dna in human body?

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What is the DNA ?
DNA is like a finger print in human , its a long molecule found in the core of cells , and chemicaly arranged in order to perform a gene which is the code of the cell 
What does DNA do ?
DNA express everything the cell , and its reponsible to do the following :
1. functioning 
2. development 
3. reproduction
4. growth 
Where can DNA found in human body ?
human body have around 10 trillion cells , you can the DNA every cell of them , no matter the shape or size or location is it such as : skin , inner body , hair , muscles 
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