Where Did Viruses Come From?

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  • Published: 13 June 2018
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    There are fossils of viruses, of sorts, preserved in the DNA of the hosts that they’ve infected. Including you. This molecular fossil trail can help us understand where viruses came from, how they evolved and it can even help us tackle the biggest question of all: Are viruses alive?

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    References:
    ncbi.nlm.nih.gov/pmc/articles/PMC3094976/
    ncbi.nlm.nih.gov/pmc/articles/PMC4609113/
    ncbi.nlm.nih.gov/pubmed/19270719/
    ncbi.nlm.nih.gov/pmc/articles/PMC4096385/
    ncbi.nlm.nih.gov/pmc/articles/PMC3758182/
    ncbi.nlm.nih.gov/pmc/articles/PMC3190193/
    hal.archives-ouvertes.fr/hal-00679842/document
    bioinformatics.cvr.ac.uk/paleovirology/site/html/posts/2013-04-15_what_is_paleovirology.html
    sciencemag.org/news/2017/04/giant-viruses-found-austrian-sewage-fuel-debate-over-potential-fourth-domain-life
    khanacademy.org/test-prep/mcat/cells/viruses/a/are-viruses-dead-or-alive
    serc.carleton.edu/microbelife/yellowstone/viruslive.html
    nature.com/scitable/topicpage/the-origins-of-viruses-14398218#
    nature.com/scitable/topicpage/discovery-of-the-giant-mimivirus-14402410
    ncbi.nlm.nih.gov/pmc/articles/PMC2976387/
    nature.com/news/giant-viruses-open-pandora-s-box-1.13410
    ncbi.nlm.nih.gov/pubmed/19561090
    ncbi.nlm.nih.gov/pmc/articles/PMC2946954/
    ncbi.nlm.nih.gov/pmc/articles/PMC2906475/
    ncbi.nlm.nih.gov/pmc/articles/PMC3179036/
    theatlantic.com/science/archive/2018/05/a-7000-year-old-virus-sequenced-from-a-neolithic-mans-tooth/559862/
    uniprot.org/uniprot/Q9P2P1
    journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1001191
  • Science and Technology Science and Technology

Comments • 2 925

  • Zack Irahza
    Zack Irahza  7 hours back

    Its okay guys.
    I have my Hazmat suit on stand by at all times...

    • Vincent Cardona
      Vincent Cardona  1 days back

      Ohhhh. This is why bacteria and viruses are different

      • Jin Wentao
        Jin Wentao  1 days back

        retrotransposons are 40% of human genome

        • D3F4ULT INPUT
          D3F4ULT INPUT  2 days back

          They just smol rocks

          • Ren
            Ren  2 days back

            Our definition of 'Life' is limited...there's a lot more out in the universe...but could we recognize it as life, when we can't even recognize a virus as such?

            • Mandoon
              Mandoon  2 days back

              I'm simple, am I a virus?

              • Jaydeep Vipradas
                Jaydeep Vipradas  2 days back

                A. Viruses somehow "knows our genes", not just individual but also as some community.
                B. They can patch our genes.
                A and B together implies that viruses are global phenomenon, not local.
                It appears, during evolution we took shortcuts. Or our consciousness and emotions are so strong that we hurt our genes. This gives opportunities for viruses to patch.
                Evolution of viruses could be emergence. Set of people behaving in certain ways can create vibrations yielding shortcomings at genetic level. As far extent of life can go in the universe, feeble part of the universe could respond to set of vibrations, as nothing goes to waste in the universe. This reaction could be a genetic code yielding viruses. That's why we could be seeing certain community is prone to some viruses and some is immune.

                • Kaiser SwagHelm II
                  Kaiser SwagHelm II  3 days back

                  1k Anti-VaxTards disliked this work of art!

                  • The DDV Show
                    The DDV Show  3 days back

                    The question of life is a philosophical one, not a scientific one. Yes, viruses are alive.

                    A living entity is one that is self-sustaining and whose actions are self-motivated.

                    • fadrium
                      fadrium  3 days back

                      No virus fosil? Well insect traped in amber usually has bacteria and virus traped in it.

                      • Petter Say jew
                        Petter Say jew  3 days back

                        F my sianc teaher i new we yas we wer mamal

                      • 天楽
                        天楽  3 days back

                        So basically....
                        We are like virus:
                        We can reproduce, but one can not do it alone.
                        We can evolve, obviously.
                        Produce no energy but wastes a ton.
                        No control over internal environment, being bodily or emotional.
                        I see a pattern here......

                        • JOTM222
                          JOTM222  4 days back

                          Pathogens in general: *Enters body*
                          Immune System: *Tough guy finger snapping*

                          • E :3
                            E :3  4 days back

                            I've been asking and looking up forever where STDs originate from and how a person initially gets it (apart from being infected by it via dexual activity). Like are there people who are born with it? Or is it something that develops suddenly initially.

                            • Ben M
                              Ben M  4 days back

                              Do I understand correctly what viruses are and do? Here's my perception: Viruses are self-driven to replicate, and they use external self-powered tools (cells) to manufacture copies of themselves. This allows viruses to stay simpler and be more flexible in taking control of and harnessing more types of external manufacturing resources. Their conservation of energy enables them to more efficiently find and enter cells, direct manufacturing, and leave cells to replicate exponentially. Doing so maximizes their success in propagating their key encoding into perpetuity. The classification of "being alive" requires an entity to be driven to and successful at propagating its key encoding via some form of being "animate" or mobile. The propagation doesn't require consciousness or decision-making. Viruses are driven to and are preeminently successful at replicating themselves. They do so by using adaptation and mobility to leverage external tools and resources. If these things are true, how can viruses not be considered living entities when they are singularly dedicated to replicating themselves just as much as, and more capably than, say, molds are?

                              • James Hudson
                                James Hudson  5 days back

                                6:50 humans can't make energy for themselves. guess we're not alive either.

                                • Electrono9
                                  Electrono9  5 days back

                                  Where viruses come from starts at 4:45

                                  • jaxxstraw
                                    jaxxstraw  6 days back

                                    First estimate: <500
                                    Second estimate: 68,000,000

                                    *hired for Microsoft time remaining team*

                                    • Patrick Crausaz
                                      Patrick Crausaz  6 days back

                                      Who's getting a flue shot every year?

                                      • これは私たちですRyliB3 GD

                                        Like To Not Get Infected

                                        • Mr.Kleiner
                                          Mr.Kleiner  7 days back

                                          We all know viruses came from Umbrella

                                          • Thot Slayer
                                            Thot Slayer  7 days back

                                            How do viruses exist before they had things to infect

                                            • Aj Dembroski
                                              Aj Dembroski  1 weeks back

                                              Is there any thought to the idea that maybe viruses are their own tree of life? A second biogenesis?

                                              • Krazyfart UwU
                                                Krazyfart UwU  1 weeks back

                                                Can you cut out(CRISPR) an ancient virus gene and it not effect the living organism like cause a mutation or not developing properly at all?

                                                • CYNow8824
                                                  CYNow8824  5 days back

                                                  Krazyfart UwU depends on if that piece of viral DNA actually does anything or not. There are a few examples of very important genes that originated from viral DNA (from infections millions of years ago), and if you cut one of these out you would cause a problem since by this point it is an important part of our genome. But there are plenty of pieces of viral DNA that are just there, not doing anything and you probably could cut them out without causing any problems, but there wouldn’t be a point to doing that cause they don’t do anything.

                                              • Helljumper
                                                Helljumper  1 weeks back

                                                What if the brain is a highly evolved virus

                                                • Nathan Miller
                                                  Nathan Miller  1 weeks back

                                                  aaahhh.... all life is a virus...

                                                  • Subramaniam Chandrasekar

                                                    "Scientists believe" I stopped video at this point.

                                                    • Bee
                                                      Bee  1 weeks back

                                                      He had to do it to us.

                                                      • Patrick Fitzgerald
                                                        Patrick Fitzgerald  2 weeks back

                                                        This was so lame I almost died

                                                        • Valerija Homcenko
                                                          Valerija Homcenko  2 weeks back

                                                          Nice video! Thanks!

                                                          • donkeykonghero
                                                            donkeykonghero  2 weeks back

                                                            Viruses probably help living cells to evolve quickly.

                                                            • Trigger5.56
                                                              Trigger5.56  2 weeks back

                                                              So a virus is some sort of a parasite

                                                              • WAQUAR AHSAB
                                                                WAQUAR AHSAB  2 weeks back

                                                                Can you create a virus? maybe by collecting dna/rna of different organisms and cover them with protein and place them in a capsule?

                                                                • jupiter
                                                                  jupiter  2 weeks back

                                                                  What if viruses are the key to cure cancer?

                                                                  • F.B.I agent 729361
                                                                    F.B.I agent 729361  2 weeks back

                                                                    Pandora’s jar

                                                                    • Felix Sun
                                                                      Felix Sun  2 weeks back

                                                                      This guy had a scoliosis, look at his body

                                                                      • Kerry Hart
                                                                        Kerry Hart  2 weeks back

                                                                        Parrasidic reproducters

                                                                        • Robert Bright
                                                                          Robert Bright  2 weeks back

                                                                          This video would be better served by having the audio spoken by a non - hypomanic person.

                                                                          • Wolsky Hubert
                                                                            Wolsky Hubert  2 weeks back

                                                                            Virus came from momy virus

                                                                            • Caike
                                                                              Caike  3 weeks back

                                                                              Maybe I'm interpreting something wrong, but the virus first hypothesis doesn't make sense to me. Viruses need other cells to reproduce, so how could they have been first?

                                                                              • Rl Art
                                                                                Rl Art  3 weeks back

                                                                                mimivirus be like:
                                                                                I'm swole cuz of this protein

                                                                                • Jim Fitzpatrick
                                                                                  Jim Fitzpatrick  3 weeks back

                                                                                  This is a great series. I'm a bit addicted to it! The hot daddy presenting this video is also a bonus. ;)

                                                                                  • Mr Letox
                                                                                    Mr Letox  3 weeks back

                                                                                    Actually
                                                                                    Virus is a tik tok gringy video invading your body

                                                                                    • Don't call me stupid
                                                                                      Don't call me stupid  3 weeks back

                                                                                      This Channel is amazing and really informative without trying to be over the top in their explanations for the sake of spectacle, I've been looking for something like this for months :)

                                                                                      • vtowerbridge
                                                                                        vtowerbridge  3 weeks back

                                                                                        Very useful. Thank you!

                                                                                        • Devon Ferrier
                                                                                          Devon Ferrier  3 weeks back

                                                                                          Just an idea.

                                                                                          • Devon Ferrier
                                                                                            Devon Ferrier  3 weeks back

                                                                                            Mitochondria could be looked at as a precursor to bacteria but after viruses; Simply because the mitochondrion has it's own DNA Chromosome being however small that it is, and having it's own ribosomes to reproduce it's Genetic material, as well as producing proteins necessary for function?

                                                                                            • Davida DAUSUEL
                                                                                              Davida DAUSUEL  3 weeks back

                                                                                              I must say, that did anyone think of the game Halo which contained the ( flood )?