Some Microbes Have Been With Us Since Before We Existed

Discussion in 'Science' started by Taxonomy26, Jul 22, 2016.

  1. Taxonomy26

    Taxonomy26 Banned

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    This isn't about the Evo/Creation debate per se.
    But obviously it goes to it, as so many papers do.
    Evolution IS the "Central unifying principle of modern Biology" according to the NAS.
    IAC, it's an interesting article, that again, takes evo for granted, as that's the Only way the evidence from many disciplines makes any sense.


    Some Microbes Have Been With Us Since Before We Existed
    Certain gut bacteria have Evolved in parallel with apes, so that their family tree perfectly mirrors our own.
    http://www.theatlantic.com/science/...-been-with-us-since-before-we-existed/492503/
    The Atlantic - July 2016

    Around 10 million years ago, a population of African apes diverged down two paths. One lineage gave rise to gorillas. The other eventually split again, producing one branch that led to humans and another that forked into chimpanzees and bonobos. This is the story of our recent evolutionary past. It’s also the story of some of the microbes in our guts.

    We have tens of trillions of bacteria and other microbes in our guts—at least one for each of our own human cells. Some species within this microbiome are passers-by, which we pick up from our food and our environments. But others are much older companions.

    Andrew Moeller from the University of California, Berkeley, has found that there are a few groups of human gut bacteria whose history pre-dates humanity. Their ancestors lived in the guts of ancestral apes, and as those ancient animals diverged into modern species, the microbes did, too. In technical terms, they co-speciated. In simpler ones, if you drew out their family tree, you’d get ours for free; you could reconstruct the evolution of apes simply by comparing the right bacteria in their bowels.

    “Some of the bacteria in our gut are derived from very ancient lineages that have been passed down through the primates for millions of years,” says Moeller. “They’re like our genes in that sense.”

    Co-speciation between animals and microbes is fairly common.".."
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  2. One Mind

    One Mind Well-Known Member Past Donor

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    Why did they not evolve, crawl out our anuses and become a higher lifeform?

    I guess they were quite content living where they live? No ambition?

    They should have had the ambition of the first self replicating single cell organism and become lions and tigers and bears. Get some respectability going.

    But perhaps they were needed to stay where they are, and did.
     
  3. sdelsolray

    sdelsolray Well-Known Member

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    The biological theory of evolution predicts that some species have had little, if any, selection pressure because environmental conditions affecting their niche have not changed much, if at all, over a certain time frame. As such, little change in their phenotype is observed over that time frame. That is not to say there have been no changes to that species' genome...there has but the expression of those changes in the population's phenotype are not naturally selected. On the other hand, species which are faced with significant selection pressure will change phenotype or become extinct.

    The actual empirical evidence strongly supports this aspect of biological evolution theory.
     
  4. waltky

    waltky Well-Known Member

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    Promising results for treating obesity, allergies, cancer, Parkinson’s disease and other illnesses...
    [​IMG]
    Gut microbes may be used to cure illnesses: doctor
    Mon, Mar 20, 2017 - Big-data research on gut microbes shows promising results for treating obesity, allergies, cancer, Parkinson’s disease and other illnesses, a Taichung-based doctor said on Saturday at an event to inaugurate the Taiwan Microbiota Consortium.
     

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