Where Did Viruses Come From?

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

Comments

Dark Light says:

Do you think the way they live and reproduce that they could be what evolves into animals and bugs or what might be making everything else evolve

adirty brick says:

dislike not enough puns about going viral

Timurv1234 says:

Coudl you please do an episode on Brachiosaurs??? I just love them!

Abdul Kader says:

I love this channel

Sarthak Rana says:

Just one question and I might be wrong for asking this but help me out here, If the hypothesis says that viruses might have had evolved before the archaebacteria and others came to existence then how did they survive and replicate because they do need a host right? Or is it that the earlier species of viruses were more complex than the ones we know today as you guys mentioned ex the Mimi virus's ability to code for proteins. Help me out here please.

Kargon Coppercoin says:

I love your channel. Any chance we could see an episode on Macrauchenia, my favorite ice age mammal, or just more stuff on mammals of that era in general?

Artur Duchene says:

Maybe it was the viruses that came first and as cellular organisms developed and evolved viruses no longer need the extra material and became proteins shells containing only RNA or DNA. I always wondered since they are so primitive and leave to fossil remains it will likely never be known for sure.

KDD0063 says:

This presenter is my favourite out of the 3, I wish he did all the videos.

Jimmy Gore says:

Viruses are the ancient

Tyler Martin says:

Thank you for sparing the pun

Phazelight says:

That slender man noise is freaking me out

Michael Ramer says:

VERY INTERESTERING

Econymous says:

wouldn't be surprised if viruses are collectively intelligent …
and those big viruses are masternodes

Gamezy says:

How did Virus get into cell? How did it know what to do and what not? Why virus can affect us? Why is there even a virus? What make virus virus?

makiiavely says:

5:45 I don't really understand why that is weird, since viruses are essentially genetic material inside of a capsid, which is made up of protein, and since proteins are codified in DNA, the virus should have the genetic sequences that allow it to fabricate more capsid through genetic expression, although not with its own resources of course

RapTurd586 says:

I'd like to see a video on how single celled protists became multicelled plants, algae, fungi, and animals.

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