describe two practical applicatons for being able to extract DNA from cells

Question

Since this is not my area of expertise, I searched Google under the key words "DNA extraction use" to get these possible sources:

http://en.wikipedia.org/wiki/DNA_extraction
http://www.accessexcellence.org/AE/AEC/CC/DNA_extractions.html
http://www.courttv.com/onair/shows/forensicfiles/techniques/dna.html
http://invam.caf.wvu.edu/methods/spores/DNAextract.htm

Substituting "application" for "use," I found:

http://www.ingentaconnect.com/content/bsc/emi/2003/00000005/00000007/art00007
http://72.14.253.104/search?q=cache:bHG1S6LBKD8J:www.pressurebiosciences.com/app_notes/AN-10003.v1.pdf+DNA+extraction+application&hl=en&ct=clnk&cd=6&gl=us&client=safari
http://www.pathtech.com.au/files/0C1J0Y7O949R2U9G0O6V481G4M01/AutomatedDNAextraction.pdf
http://www.decode.com/genotyping/PDF's/DNA%20extraction%20and%20WGA%20WEB.pdf

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.