linkedin post 2017-11-25 07:19:19

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RNA WORLD. “The Virus World Theory is closely related to the RNA World Theory, which says life first evolved as small pieces of RNA that slowly developed into complex DNA-carrying organisms. The Virus World Theory agrees that life's genetic material began as RNA. But it differs by arguing that the ancestors of viruses evolved before cells.” https://lnkd.in/eXmJ-Tt View in LinkedIn
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linkedin post 2017-11-25 07:17:09

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STREAMLINING AND OURSOURCING. “Over time, Koonin argues, the parasitic genetic elements remained unable to replicate on their own and evolved into modern-day viruses that mooch off their cellular hosts. The genes they parasitized began to evolve different types of genetic information and other barriers to protect themselves from the genetic freeloaders, which ultimately evolved into cells.” https://lnkd.in/eXmJ-Tt View in LinkedIn
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linkedin post 2017-11-25 07:13:54

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RNA JUMBLE SALES. “According to his theory, dubbed the Virus World, the ancestors of modern viruses emerged when all life was still a floating stew of genetic information, amino acids, and lipids. The earliest pieces of genetic material were likely short pieces of RNA with relatively few genes that often parasitized other floating bits of genetic material to make copies of themselves. These naked pieces of genetic information swapped genes at a primeval genetic flea market, appropriating hand-me-downs from other elements and discarding genes that were no longer needed.” https://lnkd.in/eXmJ-Tt View in LinkedIn
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linkedin post 2017-11-25 07:11:33

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VIRUS FIRST VIEWPOINT. “There are actually relatively few formally-trained evolutionary scientists who will accept the virus-first perspective. I’ve encountered a couple. I’m immersed in a population of traditional evolutionary biologists here at Irvine. They just dismiss it. They don’t even want to think about it. So it’s not a prevailing perspective.” https://lnkd.in/ej7yCCq View in LinkedIn
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linkedin post 2017-11-25 07:08:13

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FRAGMENT FROM NATURE touches on the controversial Virus First Hypothesis for the evolution of life. Much of this Fragment quotes a documentary on the topic, and a later Fragment will focus on related academic publications. The history of science is replete with examples of heretical ideas that were condemned by other scientists, but later became mainstream. Many scientists hate new ideas. View in LinkedIn
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linkedin post 2017-11-24 06:38:54

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RELEVANT EXAMPLE. "In Japan and eastern Europe, species in two rodent lineages have completely eliminated the Y chromosome and replaced SRY with a different gene on a different chromosome. In each lineage the Y-less rodents have recently diverged into three species." https://lnkd.in/ehjz378 View in LinkedIn
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linkedin post 2017-11-28 05:48:16

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CRAYFISH RAPID SPECIATION. "Generally, new species arise gradually over long periods of time, but the genetic studies indicate that in this case speciation was virtually instantaneous, something that happens in plants but is very rare in animals. And the marbled crayfish is the only one among its 14,000 crustacean relatives able to clone itself." https://lnkd.in/epB74fM View in LinkedIn
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linkedin post 2017-11-27 16:26:19

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GENETIC DIVIDE. "In the new study, published this month on the bioRxiv preprint server, researchers show that the slough crayfish males can’t fertilize marbled crayfish eggs, a hallmark of a species split, and that the clones contain enough genetic differences to justify designating them a separate species." https://lnkd.in/epB74fM View in LinkedIn
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