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DNA has a 521-year half-life
Nature ^ | Wednesday, October 10, 2012 | Matt Kaplan

Posted on 10/10/2012 8:32:08 PM PDT by SunkenCiv

By comparing the specimens' ages and degrees of DNA degradation, the researchers calculated that DNA has a half-life of 521 years. That means that after 521 years, half of the bonds between nucleotides in the backbone of a sample would have broken; after another 521 years half of the remaining bonds would have gone; and so on.

The team predicts that even in a bone at an ideal preservation temperature of -5 °C, effectively every bond would be destroyed after a maximum of 6.8 million years. The DNA would cease to be readable much earlier -- perhaps after roughly 1.5 million years, when the remaining strands would be too short to give meaningful information.

"This confirms the widely held suspicion that claims of DNA from dinosaurs and ancient insects trapped in amber are incorrect," says Simon Ho, a computational evolutionary biologist at the University of Sydney in Australia. However, although 6.8 million years is nowhere near the age of a dinosaur bone -- which would be at least 65 million years old -- "We might be able to break the record for the oldest authentic DNA sequence, which currently stands at about half a million years," says Ho...

"I am very interested to see if these findings can be reproduced in very different environments such as permafrost and caves," says Michael Knapp, a palaeogeneticist at the University of Otago in Dunedin, New Zealand.

Moreover, the researchers found that age differences accounted for only 38.6% of the variation in DNA degradation between moa-bone samples. "Other factors that impact on DNA preservation are clearly at work," says Bunce. "Storage following excavation, soil chemistry and even the time of year when the animal died are all likely contributing factors that will need looking into."

(Excerpt) Read more at nature.com ...


TOPICS: History; Science; Travel
KEYWORDS: deoxyribonucleicacid; dna; genetics; godsgravesglyphs; helixmakemineadouble; paleogenetics
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M. Møhl

DNA has a 521-year half-life

1 posted on 10/10/2012 8:32:10 PM PDT by SunkenCiv
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To: Renfield; StayAt HomeMother; Ernest_at_the_Beach; decimon; 1010RD; 21twelve; 24Karet; ...

 GGG managers are SunkenCiv, StayAt HomeMother & Ernest_at_the_Beach
Thanks Renfield.

To all -- please ping me to other topics which are appropriate for the GGG list.


2 posted on 10/10/2012 8:34:34 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv
Any word on what causes the breakdown?

Or are we are the start of that hunt?

/johnny

3 posted on 10/10/2012 8:38:46 PM PDT by JRandomFreeper (Gone Galt)
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To: SunkenCiv
Interesting. On the other hand, in your body during life it is estimated that there are 10’s of thousands - possibly millions - occurrences of DNA damage per cell per day. Seriously - those are the estimates. Obviously most of these are repaired.
4 posted on 10/10/2012 8:41:31 PM PDT by pieceofthepuzzle
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To: SunkenCiv

Dinosaurs, humans, and everything else, are less than 10,000 years old. If you don’t agree I pray for your soul.


5 posted on 10/10/2012 8:42:51 PM PDT by SAR (Son of THE Revolution.)
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To: SAR

I’ll pray for your brain.


6 posted on 10/10/2012 8:44:36 PM PDT by EEGator
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To: EEGator

Go study your Bible and get back to me when you understand it. All you are supposed to know is there.


7 posted on 10/10/2012 8:46:06 PM PDT by SAR (Son of THE Revolution.)
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To: SunkenCiv
In order to refute evolution, one might normally wish for a modern human fossil in a coal bed, or a modern human in the jaws of a T Rex. Those would be the sort of head-scratchers that would make people think twice about the standard storyline of evolution.

But now, if this research is accurate, if we found viable dinosaur DNA, I imagine that would have people scratching their head. Because it shouldn't be possible -- but what if we find it?

8 posted on 10/10/2012 8:48:38 PM PDT by ClearCase_guy (ua)
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To: SAR

The Bible isn’t the literal truth, it tells truths.


9 posted on 10/10/2012 8:51:42 PM PDT by EEGator
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To: EEGator

10 posted on 10/10/2012 8:52:21 PM PDT by UCANSEE2 ( If you think I'm crazy, just wait until you talk to my invisible friend.)
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To: EEGator

I have a zero tolerance policy for relativism. Please, elaborate on the assumptions you use to determine which of God’s words are truth, and which are open to being part of an interpretation of truth.

Thanks.


11 posted on 10/10/2012 8:56:17 PM PDT by SAR (Son of THE Revolution.)
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To: pieceofthepuzzle
Obviously most of these are repaired.

Is DNA damage (and lack of repair) what causes aging?

12 posted on 10/10/2012 8:56:19 PM PDT by UCANSEE2 ( If you think I'm crazy, just wait until you talk to my invisible friend.)
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To: SAR

God didn’t write the Bible, men did.


13 posted on 10/10/2012 8:58:56 PM PDT by EEGator
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To: SAR

How do I build a computer chip?


14 posted on 10/10/2012 8:59:56 PM PDT by null and void (Day 1359 of our ObamaVacation from reality - Obama, a queer and present danger)
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To: SAR; EEGator
I have a zero tolerance policy for relativism.

You know, the Muslims say the exact same thing.

15 posted on 10/10/2012 9:02:05 PM PDT by UCANSEE2 ( If you think I'm crazy, just wait until you talk to my invisible friend.)
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To: null and void

It’s in Leviticus I think.


16 posted on 10/10/2012 9:03:36 PM PDT by EEGator
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To: EEGator; SAR
God didn’t write the Bible, men did.

Yeah.... but God wrote the Ten Commandments. It even says so in the Bible. And he had to do it twice, because we are such idiots.

17 posted on 10/10/2012 9:04:06 PM PDT by UCANSEE2 ( If you think I'm crazy, just wait until you talk to my invisible friend.)
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To: EEGator

God authored the Bible, man only wrote it down.


18 posted on 10/10/2012 9:04:33 PM PDT by SAR (Son of THE Revolution.)
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To: EEGator

God authored the Bible, man only wrote it down.


19 posted on 10/10/2012 9:04:37 PM PDT by SAR (Son of THE Revolution.)
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To: UCANSEE2

20 posted on 10/10/2012 9:05:06 PM PDT by EEGator
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To: EEGator

No, I checked. Lots of math involved, maybe there’s something in Numbers?


21 posted on 10/10/2012 9:06:20 PM PDT by null and void (Day 1359 of our ObamaVacation from reality - Obama, a queer and present danger)
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To: null and void

You use your God given ability.


22 posted on 10/10/2012 9:07:09 PM PDT by SAR (Son of THE Revolution.)
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To: SAR

I’m at a loss of words.


23 posted on 10/10/2012 9:08:35 PM PDT by EEGator
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To: null and void; SAR
How do I build a computer chip?

Well... I think you start with some sand, and a quartz rock.

24 posted on 10/10/2012 9:09:27 PM PDT by UCANSEE2 ( If you think I'm crazy, just wait until you talk to my invisible friend.)
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To: SAR
You use your God given ability.

Go study your Bible and get back to me when you understand it. All you are supposed to know is there.

Which is it?

25 posted on 10/10/2012 9:09:31 PM PDT by null and void (Day 1359 of our ObamaVacation from reality - Obama, a queer and present danger)
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To: EEGator

I’m sorry it took you this long to arrive at this position.


26 posted on 10/10/2012 9:09:54 PM PDT by SAR (Son of THE Revolution.)
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To: null and void

That was good!


27 posted on 10/10/2012 9:10:18 PM PDT by EEGator
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To: UCANSEE2

Chapter and verse please?


28 posted on 10/10/2012 9:10:25 PM PDT by null and void (Day 1359 of our ObamaVacation from reality - Obama, a queer and present danger)
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To: SAR; EEGator
God authored the Bible

That's nothing. He created the Universe, and did it quicker than it took them to write down the Bible.

29 posted on 10/10/2012 9:11:36 PM PDT by UCANSEE2 ( If you think I'm crazy, just wait until you talk to my invisible friend.)
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To: null and void

They are the same.

I don’t wish to feud with you. I will pray for you. God bless you and may you find truth.


30 posted on 10/10/2012 9:12:02 PM PDT by SAR (Son of THE Revolution.)
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To: SAR

The truth is I think your insane, and I’m running away from you.


31 posted on 10/10/2012 9:12:57 PM PDT by EEGator
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To: SunkenCiv

Great find! Thanks.

Politics and the Fourth Dimension are commonly knee-jerk, emotional topics of discussions.

This article is interesting also from the standpoint that the mechanism for the half-life is not based on radioactivity or the change in ratio between isotopes or elements.

It will be interesting to watch as other paleontologists publish half-life data on other animal species.

Amimals in Arctic permafrost from the late Pleistocene would be an excellent baseline for a climate far removed from New Zealand.


32 posted on 10/10/2012 9:13:26 PM PDT by Graewoulf ((Traitor John Roberts' Obama"care" violates Sherman Anti-Trust Law, AND the U.S. Constitution.))
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To: null and void

33 posted on 10/10/2012 9:13:56 PM PDT by UCANSEE2 ( If you think I'm crazy, just wait until you talk to my invisible friend.)
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To: UCANSEE2

Amen!


34 posted on 10/10/2012 9:14:07 PM PDT by SAR (Son of THE Revolution.)
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To: EEGator
I’m at a loss of words.

Ancient Chinese Proverb: Wisdom is in knowing and not saying.

35 posted on 10/10/2012 9:15:42 PM PDT by UCANSEE2 ( If you think I'm crazy, just wait until you talk to my invisible friend.)
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To: SAR
If you don’t agree I pray for your soul.

Why would my soul be in danger because I disagree with you?

Sounds like you have control issues.

Salvation doesn't rely on belief in a 6000 year old world. It relies on a Redeemer.

/johnny

36 posted on 10/10/2012 9:16:54 PM PDT by JRandomFreeper (Gone Galt)
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To: UCANSEE2
“Is DNA damage (and lack of repair) what causes aging?”

Probably contributes, but aging is complex, and we clearly aren't close to really understanding it. There are regions, for example, called telomeres at the ends of each chromosome that protect the chromosome from degradation. These regions become shorter after each cell division, and this is thought to be one thing that contributes to aging.

It's also important to realize that DNA is also chemically modified - without changing its sequence. This is called epigenetic modification, and is incredibly important. These chemical modifications of DNA, like methylation, are what tell the cell which genes to express in that particular cell. Making stem cells from adult cells is based on altering these chemical modifications of DNA. It's certainly possible that changes in the chemical modifications of DNA contribute to aging.

In the end, nobody gets out alive, and aging is probably programmed into us. Sometimes I agree with the line for My Generation by the Who - ‘hope I die before I get old’..

37 posted on 10/10/2012 9:17:53 PM PDT by pieceofthepuzzle
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To: UCANSEE2
Thank you esse.
38 posted on 10/10/2012 9:19:07 PM PDT by EEGator
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To: EEGator
If I want a good guide to human interaction, the one Book is pretty good.

If I want to raise bees (Really, I need the rib cage of a dead lion?) breed spotted sheep (Peeled hazel, poplar and chestnut trumps selective breeding? OooooKAY) or sharpen a knife (OK, iron on iron sorta works, but a grinding stone is faster) I'll look elsewhere.

39 posted on 10/10/2012 9:19:20 PM PDT by null and void (Day 1359 of our ObamaVacation from reality - Obama, a queer and present danger)
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To: UCANSEE2
Yeah.... but God wrote the Ten Commandments. It even says so in the Bible. And he had to do it twice, because we are such idiots.

We might be a bit overdue for a third iteration.

40 posted on 10/10/2012 9:21:19 PM PDT by null and void (Day 1359 of our ObamaVacation from reality - Obama, a queer and present danger)
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To: SAR

Let them be. If they want to believe that billions of years ago there was a bunch of chaos in the form of a big bang, which somehow became and amoeba in the middle of something that they don’t tell you where it came from, and that amoeba landed in some water and started swimming, and that swimming thing grew bigger and became a fish, or a tadpole or some sort of sea creature, and it decided to sprout legs one day and grow fur and turn into a land animal which eventually turned into an ape which eventually stood up and put on a suit and got a degree from Harvard and became a scientist - let them have at it. Personally, I think they have a lot more faith than we do. Too bad it doesn’t end well for them.


41 posted on 10/10/2012 9:22:23 PM PDT by Blogger
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To: UCANSEE2
"Yeah.... but God wrote the Ten Commandments. It even says so in the Bible. And he had to do it twice, because we are such idiots."

So who's the bigger implied idiot? Your god apparently knows how bad mankind was in keeping god-delivered, hard-copy "commandments", personally god-penned, and yet, it continues along to arrange the circumstances in such a way that to believe in your god, you first need to believe in men who are the only source for you about your god. Your god could easily have used the wireless telecommunication system that it used with the "prophets", with all of the rest of humanity, invalidating the need for you to rely on second, third, nay n-teenth hand testimonies, but doesn't. So, here you are, today, with your faith in your god totally subservient to your belief in the words of men. Funny, isn't it?

42 posted on 10/10/2012 9:24:07 PM PDT by James C. Bennett (An Australian.)
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To: null and void

I believe in God, but this six or ten thousand year old Earth stuff is crazy. Just like you said, the Bible is full of good stories, but right now I’m doing electromagnetic fields work. I’ll be using the text.

Lots of people seem to think you can’t be a scientist and believe in God. (or vice versa)


43 posted on 10/10/2012 9:24:24 PM PDT by EEGator
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To: SAR
God authored the Bible, man only wrote it down.

In God I trust, in 'man', not so much.

Which 'version' of the Bible do you go by ?

Or... since that is not really the an issue (at least to me), then why are there different versions ?

Have you ever read the Bible with the most popular versions, side by side, along with the original Greek and Latin and Hebrew with the various translations for particular words or phrases annotated and listed ?

44 posted on 10/10/2012 9:24:46 PM PDT by UCANSEE2 ( If you think I'm crazy, just wait until you talk to my invisible friend.)
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To: Blogger
Too bad it doesn’t end well for them.

What doesn't end well for who?

The people that disagree with you about how God created the universe?

I expect that those that profess a belief in Christ are redeemed, regardless of what they think about science.

/johnny

45 posted on 10/10/2012 9:26:27 PM PDT by JRandomFreeper (Gone Galt)
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To: Blogger

Amen, brother or sister. You have given me the strength to move on from this thread.


46 posted on 10/10/2012 9:26:34 PM PDT by SAR (Son of THE Revolution.)
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To: SAR
And I will fervently pray that you don't burn everything that isn't part of your canon.

You certainly can site plenty of historical precedence.

Caliph Umar, for example, destroyed the Library of Alexandria shortly after the conquest of Egypt in 639 AD.

The caliph, when informed about the institution, declared that if the books it contained agreed with the Koran, then they were superfluous, and if they disagreed, then they were heretical. In either event, they were worthless and should be obliterated. The books of the Library were put to the torch.

He sounds a LOT like you.

You cannot have my Grove.

47 posted on 10/10/2012 9:29:31 PM PDT by null and void (Day 1359 of our ObamaVacation from reality - Obama, a queer and present danger)
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To: JRandomFreeper; Blogger

Blogger is obviously a great Christian. Gloating of our burning in Hell over a differing opinion on the origins of the Universe.


48 posted on 10/10/2012 9:30:08 PM PDT by EEGator
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To: EEGator
Gloating, envy, and smug self-satisfaction are sins, from my studies.

"Study to show thyself approved, a workman that need not be ashamed" doesn't sound like asking questions and studying the universe is a mortal sin.

Even if I'm wrong about my conclusions. As I'm most likely to be.

I just see through a glass, darkly. As do we all.

/johnny

49 posted on 10/10/2012 9:37:46 PM PDT by JRandomFreeper (Gone Galt)
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To: EEGator

Long tradition of that too. Medieval churches often had frescoes of people in Heaven enjoying the spectacle of their former friends and neighbors roasting on the fires of Hell.

Think WWF meets Thunderdome...


50 posted on 10/10/2012 9:48:28 PM PDT by null and void (Day 1359 of our ObamaVacation from reality - Obama, a queer and present danger)
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