Can We Get DNA From Fossils?

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  • Published on: 02 October 2018
  • In 1993, scientists cracked open a piece of amber, took out the body of an ancient weevil, and sampled its DNA. Or, at least, so we thought. It took another few decades of research, and a lot of take-backs, before scientists could figure out how we could truly unlock the genetic secrets of the past.

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    References:
    https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0170940
    https://www.ncbi.nlm.nih.gov/pubmed/28486705
    https://onlinelibrary.wiley.com/doi/abs/10.1111/1755-0998.12911
    https://www.nature.com/articles/nature13408
    https://www.nature.com/articles/nature10574
    http://www.bioone.org/doi/abs/10.1603/0013-8746%282004%29097%5B0882%3ATEFMDC%5D2.0.CO%3B2
    https://www.ncbi.nlm.nih.gov/pubmed/26989198
    https://www.jstage.jst.go.jp/article/pjab1977/65/10/65_10_229/_article
    http://rspb.royalsocietypublishing.org/content/264/1381/467
    https://www.tandfonline.com/doi/abs/10.1080/20548923.2016.1258824
    https://blogs.scientificamerican.com/guest-blog/jurassic-park-and-the-race-for-ancient-dna/
    https://www.ncbi.nlm.nih.gov/pubmed/1684053
    https://www.ncbi.nlm.nih.gov/pubmed/14711425
    https://www.nature.com/articles/362709a0
    https://pubs.geoscienceworld.org/gsa/geology/article/44/8/615/188189/fossil-dna-persistence-and-decay-in-marine
    https://www.ncbi.nlm.nih.gov/pubmed/23055061
    https://www.nature.com/articles/363536a0
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2694912/
  • Runtime : 11:48
  • dinosaurs dinos paleo paleontology scishow eons pbs pbs digital studios hank green john green complexly fossils natural history Jurassic Park DNA amber weevil Quagga horse Polymerase Chain Reaction amplification Zebras mummified fossil permafrost diatoms ocean sediment Michael Crichton bones termites bees mosquitoes Kallie Moore mitochondria PCR blake de pastino base pairs

COMMENTS: 40

  • ramzeen.m
    ramzeen.m   3 days ago

    I just want them to make a dinosaur

  • DavidSixSixFive
    DavidSixSixFive   1 weeks ago

    I was under the impression that DNA had a lifespan of about 40k years before it degraded into its component acids.

  • kennethmanuntag
    kennethmanuntag   1 weeks ago

    i love watching this even though i dont know what the hell shes talking about....its like when i listen to my teacher inside class room i fall asleep..lol

  • Rafal Anonim
    Rafal Anonim   2 weeks ago

    Basic Chemistry! Collagen is just a chain of basic elements. DNA is made of Collagen, in time this disolve back to basic elements. At some point, in place where we had a DNA before, we see only basic elements like IRON, COAL, COPPER. It may have the same color but it does not hold any information inside. Dinosaur can not be resurrected because its DNA does not exist on this planet. Whats left of them is GAS and OIL, fosils. ZERO DNA!

  • BIG BAD WOLF
    BIG BAD WOLF   2 weeks ago

    Even if we could bring back a dinosaur it wouldn't be as big as it was then because the oxygen levels are different.

  • Laura Connolly
    Laura Connolly   3 weeks ago

    why is there different densities of DNA in different bones?

  • Roy
    Roy   3 weeks ago

    Maybe not impossible, if we could look at the atomic structure of a fossil we may be able to work out differences in the molecular structure of the stone which which could give us the information needed to replicate the DNA... Just saying !

  • m 88
    m 88   3 weeks ago

    first half life is very accesible, second too, but the third half life is very distant and impossible to obtain.

  • Sjwaria Law
    Sjwaria Law   3 weeks ago

    So there's hope for velociraptors with lasers conquering the world. What a great time to be alive!

  • David Benner
    David Benner   3 weeks ago

    From "fossels"? Define. Just rock, it is not DNA. If dried, hardened tree sap with a bug or plant inside a "fossel"?

  • Verdi
    Verdi   3 weeks ago

    Meh you know we only want dinosaurs. Release the dinos.

  • Doctor khan
    Doctor khan   1 months ago

    So is there gonna be a reincarnation ??Any boddyyy hearringggg?

  • Brian Richardson
    Brian Richardson   1 months ago

    Leave that mosquito alone we don't need to replicate any of them, none at all.

  • Rog5446
    Rog5446   1 months ago

    I thought that anything encased in amber did not get fossilised?

  • Osama Bin Laden
    Osama Bin Laden   1 months ago

    Only if you drank a glass of vodka each time she mentions DNA, you would be dead.

  • Roopesh T S
    Roopesh T S   1 months ago

    Your videos are quite good and interesting

  • Martin Z
    Martin Z   1 months ago

    great video! one thing though.. that loud music in the background is very distracting and, well, im not even sure i can call it music. its like a sonar playing over and over. doesnt really add much to the video. only creates an annoying distraction.

  • d0nKsTaH
    d0nKsTaH   1 months ago

    It might very well be possible to get DNA from fossils that date back 100's of millions of years.The "bones" were replaced by minerals right? They still left a finger print of the DNA. Just scan through the entire "bone" and there should be preserved a map of the DNA.Kinda like how a finger print left in mud or soft rock that hardened shortly after... as long as it doesn't crumble the print will match the real finger even though it is just rock.

  • John Berry
    John Berry   1 months ago

    If you randomly shred the pages of a book, you can't put it back together. But imagine you shred millions of copies of a book, easy one shedded differently. Now you could take all of the information and in theory, with some smart software piece the book text back together! Because where the cuts are occurring differ, you can figure out what pieces go where with massive cross-correlation. If course there might be no practical way to really do this, but it is conceivable. The more messed up copies the worse the fragmentation can be, though there will be a limit. And you would need to test and re-test individual cells essentially. Of course they might to a version of this already.

  • Kara Nardolillo
    Kara Nardolillo   1 months ago

    I wish we could go back in time. Someone get on that. 😁

  • honey bear
    honey bear   1 months ago

    Dippity dippity.. and liberty only let you pay for what you need.. nice......

  • Patolagos
    Patolagos   1 months ago

    So basically our bodies have an anti copy system in our dna?

  • DaniPooo
    DaniPooo   1 months ago

    I know that everyone's DNA is a bit different, but it's like smaller differences I suppose.so would it be possible to rebuild a working complete DNA by sampling multiple specimens with fractured DNA and then use software to find duplicates accross them.If you have 10 specimens that had 12345 in the begining and 5 that had 123..67 and 7 that had .....6789 and 10. Then my guess would be that the entire sequence would be 1 2 3 4 5 6 7 8 9 10.

  • REgamesplayer
    REgamesplayer   1 months ago

    Degrading information is not a problem here. DNA half life is not as significant as you might think, because we can fix the DNA ourselves by restoring it to its original condition. The secret here is to take DNA samples from multiple places and then let computer algorithm to record sequences and slowly, but surely to recreate the entire sequence as it was before. The core issue with restoring dead dinosaurs back to life is a lack of sufficiently advanced technology to take a lot of those samples and then to automatically put them into a format which computer could read.

  • Chad Leach
    Chad Leach   1 months ago

    The weevil is not a fossil tho. A fossil is essentially an imprint in some median, the weevil was a partially preserved specimen. It's like comparing a footprint to a corpse.