Why do cells contain DNA? EXACTLY what is it used for?

Dear braggy-ga;

Thank you for allowing me an opportunity to answer your interesting
question. DNA is a rather complicated subject, but it has been reduced
in technical terms to a much simpler explanation (thank goodness):

Here is a very fundamental explanation of what DNA does??exactly?.

What is DNA?
http://www.eng.iastate.edu/explorer/topics/dna/dnaexplain.htm

Here is another fairly simple explanation:

What is DNA?
http://www.csiro.au/helix/dna/index.html


?WHY? do cells contain DNA?

It?s one of the greatest unanswered mysteries of the universe.

Below you will find that I have carefully defined my search strategy
for you in the event that you need to search for more information. By
following the same type of searches that I did you may be able to
enhance the research I have provided even further. I hope you find
that my research exceeds your expectations. If you have any questions
about my research please post a clarification request prior to rating
the answer. Otherwise, I welcome your rating and your final comments
and I look forward to working with you again in the near future. Thank
you for bringing your question to us.

Best regards;
Tutuzdad ? Google Answers Researcher


INFORMATION SOURCES

What is DNA?
http://www.eng.iastate.edu/explorer/topics/dna/dnaexplain.htm

What is DNA?
http://www.csiro.au/helix/dna/index.html


SEARCH STRATEGY


SEARCH ENGINES USED:

Google ://www.google.com




SEARCH TERMS USED:

What is DNA?

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Request for Answer Clarification by braggy-ga on 09 May 2004 10:57 PDT

The question was not what is DNA. But Why do cells contain DNA exactly
what is it used for?

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Clarification of Answer by tutuzdad-ga on 09 May 2004 12:45 PDT

I understood your question, but by examining what DNA "is" we discover
what it "does" (exactly). If you take another look at the articles
you'll see that:

"DNA tells your cells what proteins to make, and proteins are
necessary for your body to work."

"It [DNA] stores all the coded information that basically determines
what you look like and how your body functions."

So the question you asked has indeed been answered. 

Regards;
tutuzdad-ga