DNA scientists confirm "junk" DNA is not of this earth, page 1
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reply posted on 18-6-2009 @ 02:41 PM by ZeroKnowledge
reply to post by warrenb



I am sorry to disapoint you, but Human genome project was completed in 2003.
Article is recent, i assume?
"Junk" DNA, which is clearly not junk, was called so because it is not coding for proteins and is not (big question) ,or was assumed that it was not part of control mechanisms. Aka - junk. Now it is clear that it is not junk, however it is just as clear that it does not code for proteins. Proteins are needed for blood vessels, immune system and even short search in pubmed for professor Chang (without a first name!) and his anonymous (anons?) collegaes. By the way,i found on internet that this is a repost of older article (still after 2003) and his name is Sam Chang.
Naturally Chinese name was chosen since there are a lot of respectable Changs who published articles. But there is a way around it. For example, search Chang,dna,extraterrestrial. Since article is clearly about those.
Well,


See Details. No items found.

You can search Pubmed by yourself.
www.pubmed.org
It got majority of scientific articles world wide,with abstracts.


reply posted on 18-6-2009 @ 06:00 PM by Jigore
Junk DNA is a myth, just like ''we use 10% of our brains''. This junk DNA is called... meh let me grab my biology book... well I can't find it either... so i'll explain and maybe someone will find the name for me.
DNA replication is made by a lot of protein.
First a protein called
DNA Helicase split the DNA double helix in Half.
Then some little protéine wich I can't translate the name just fix themsleves to the now splitted DNA to help his stabilization.

Then another really important protein called DNA primase will then start a primer from wich another protein called DNA polymerase will start his job to replicate
(putting a guanine in front of cytosine or an adenine in front of a thymine or vice versa)
Then after you got 2 branch of DNA... Yeah I skipped a lot of details. But now you still dont know why we got this junk DNA?

Well remember DNA polymerase? Well this little guy need something to grab on to be able to replicate DNA. So when he gets to the end of the chain, well he can't continu and the DNA chain is getting shorter and shorter everytime it replicate. So this junk DNA is there to just be there at every end of the chain to protect real important DNA in the middle. When this junk DNA is over, well you know, you cant produce stuff and you start to age.

Also the term DNA scientist is somewhat retarded


reply posted on 18-6-2009 @ 09:34 PM by Jigore
reply to post by zetabeam


''Junk'' DNA only purpose is to prevent the protein (called DNA polymerase) responsible for DNA replication to kinda ''eat'' the core of a chromosome where all the precious info in stocked. This protein need something to support it to be abble to replicate. When they reach the end of a chromosome, they can't be supported and they stop replicating and a little bit of the chromosome is not replicated. Junk DNA purpose is to be wasted. Without it, you'll be dead long ago.
spermatozoide and ovocyte (egg) do not work the same way. I can't remember how but I think some kind of protein put some extra ''junk DNA'' to each end of the chromosome. Or maybe it work a completly different way. But I know some scientists are trying to find a way to prevent ageing this way. By making regular cell to split like sexual cell.

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