Junk DNA

Genetics as it applies to evolution, molecular biology, and medical aspects.

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ThursdayNext
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Junk DNA

Post by ThursdayNext » Wed May 24, 2006 1:15 pm

Can someone please explain me what is junk DNA? Is it really that unimportant?

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LilKim
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Post by LilKim » Wed May 24, 2006 2:44 pm

classically "junk-DNA" is nucleotide sequences that don't code for genes.

However the notion of junk-dna has been questioned by many genomics studies.... because, they feel that some of this "junk" may in fact code for miRNA and possibly other things

ThursdayNext
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Post by ThursdayNext » Thu May 25, 2006 2:47 pm

I think I got it better now..
thanx :)

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jnkdna
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Post by jnkdna » Thu May 25, 2006 3:43 pm

thats wer i got my nickname from!!! :lol:
d nyt is darkest just before the dawn

spark13579
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Post by spark13579 » Sun May 28, 2006 4:55 am

What you mean is nucleotide sequences that don't code for proteins. Genes are the nucleotide sequences themselves!

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LilKim
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Post by LilKim » Sun May 28, 2006 5:26 am

not all 'functional' nucleotide sequences (or genes) code for proteins ( examples: tRNA, rRNA, miRNA ...)

truman
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Post by truman » Tue Aug 15, 2006 1:38 am

can some one be generous to offer some recent studies or discoveries on junk DNA?THANKS!
My email:[email protected]

weesper
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Post by weesper » Tue Aug 15, 2006 8:57 am

How about this one in Nature Genetics?

http://www.nature.com/ng/journal/vaop/n ... g1852.html

It shows how DNA that might have been formerly viewed as junk now appears to play a role in the 3D architecture of DNA that is in the way if folds in a predictable and reproducible pattern inside our nuclei (well, in this case a flies' nucleus)

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