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The Science of DNA!

The Science of DNA!
DNA, or Deoxyribonucleic acid is its full name, is the the genetic make up of an organism. The DNA reveals how an organism will function and develop and this is why it is sometimes called a persons blueprint. So the main concept of DNA is long term information storage. DNA is usually shown as a double helix such as the picture. The double helix is stabilized by hydrogen bonds.

The part of the DNA that decides your functions and development is your genetic code or genes (no not the jeans you wore to school the other day).

Animals and plants store their DNA in cells nucleus where as bacteria store their DNA in cytoplasm. Within cells DNA is organized into structures called chromosomes. These chromosomes duplicate before the cell splits in a process called cell replication.

DNA is basically a long polymer made of nucleotides. These nucleotides are formed by sugars and phosphates attached to the four bases. The four bases are cytosine, guanine, adenine and thymine. When the sugar and phosphate attach to these bases this makes the back bone of the DNA and is called a nucleotide. Although these nucleotides and strands of DNA are microscopic there can be millions of nucleotides in a single strand of DNA.

Unfortunately DNA is too small to see. =(

So we make it big enough to see! =)
 
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Step 1Materials to Extract DNA!

Materials to Extract DNA!
The Materials you need to extract DNA are as follows:
-A funnel
-Salt
-Dish Soap
-Cheese cloth
-Water
-Bowl
-Another bowl or beaker/measuring cup
-Strawberry
-Zip lock bag with no holes
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23 comments
Sep 3, 2010. 12:20 AMBOOM5601 says:
Woah! I have the same toaster!
Sep 8, 2010. 9:47 PMBOOM5601 says:
Here it has crumpet feature!
Sep 30, 2010. 8:41 AMilluminatis says:
for the ultimate toaster it HAS to have a bacon feature(in my opinion)
Sep 9, 2010. 9:46 AMBOOM5601 says:
Probably UK, but i live in ZA :)
Sep 6, 2010. 3:02 PMlucek says:
2 errors I saw.
"The part of the DNA that decides your functions and development or genetic code (genes, no not the jeans you wore to school the other day) is the amino acids and proteins. "
this sentence reads like you deleted half of 2 sentences and the rest got garbled together.
the 2nd is more just a nit pic. but DNA base pairs aren't microscopic. they're smaller. microscopic scale is 10^-6M the base pairs are on the scale of 10^-10m.
Sep 6, 2010. 7:12 PMlucek says:
"The part of the DNA that decides your functions and development or genetic code genes, no not the jeans you wore to school the other day is the amino acids and proteins. "
Even without the brackets it's still unclear. Rereading it I think what you meant to say is:
The part of the DNA that decides your functions and development is a genetic code (genes, no not the jeans you wore to school the other day).
The way you had it written it sounded like the amino acids and proteins were responsible for genes instead of the other way round.
Mar 7, 2010. 6:43 AMNicola Tesla says:
can u make a instructable using saliva?
Mar 15, 2010. 7:44 AMNicola Tesla says:
But I did this in the science center by swishing water in my mouth; then they did something else to it.
Mar 16, 2010. 6:21 AMNicola Tesla says:
well they added soap alcohol and i think salt but i dont know for sure.
Jun 27, 2010. 3:37 PMdombeef says:
I just did this about 2 months ago The salt is so the cheek cells dont burst until you want them to
Jul 4, 2010. 11:21 AMNicola Tesla says:
can u tell me how u did it?
Jul 4, 2010. 12:51 PMdombeef says:
Ok lets see...
The supplies are:
gatorade(For salt)
ethanol(or rubbing alcohol)
dish detergent
a pipet
A container
another container that is tall
and another container to hold the finished results

you first get the gatorade and swish it in your mouth for 1 minute
you then spit it out into the first container and wait about half an hour and then you will see a little pool of cheek cells and then use the pipet and get most of them and some of the gatorade.
Put them into the tall container and add the soap
Slowly add the rubbing alcohol in to the container down the side trying not to get them mixed.
wait about an hour and you will see a line of white stuff above the gatorade
then use the pipet and get that strand of many dna's. put it in the container to hold the results and you are done!
Jul 21, 2010. 7:16 AMNicola Tesla says:
thanks! verynice
Apr 8, 2010. 7:41 PMknex_mepalm says:
 Is that real DNA? My brother thought when you said stick white stuff it was discharge.
Dec 18, 2008. 7:46 AMjdtwelve12 says:
This Instructable would be a lot more satisfying if it included details on how / why this works. Without the science, how can we know what's actually going on here?

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