is life about the survival of the fittest chemistry?

Discussion in 'Biology & Genetics' started by globali, Jan 29, 2018.

  1. Write4U Valued Senior Member

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    Evolution creates the variety, Natural Selection weeds out the less efficient forms.
     
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  3. Gawdzilla Sama Valued Senior Member

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    AND promotes the most efficient.
     
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  5. sideshowbob Sorry, wrong number. Valued Senior Member

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    The slowest zebras get eaten - i.e. the population is eroded from the bottom end. For the ones that survive, it isn't particularly relevant who gets the gold, silver or bronze medal.
     
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  7. Gawdzilla Sama Valued Senior Member

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    And now let's talk about breeding.
     
  8. iceaura Valued Senior Member

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    The best cooperator's DNA often out-reproduces the worst. That's the basic point of leverage for evolutionary advantage.
    You mean the collection of millions of self-sacrificing cooperators we call "cells", harboring and embedded in their matrix of mutualistic and symbiotic bacteria and yeasts, wandering about a landscape of similar collections almost all of which are either indifferent or cooperative with it in some way?
    By cooperating in various ways, at various levels, mostly.
    Cooperation requires no more "intelligence" than competition - maybe less. The physical adaptations often involve loss of capability.
    And more sparse on the landscape.
    The worse cooperators are at the edge of the herd, often - the ones that harbor disease, the ones that don't keep up or pay attention to others, the young of the less nurturing parents, etc.
    And in the meantime, most of their DNA is at the center of the herd.
     
  9. pluto2 Registered Senior Member

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    There is still a lot we don't know about how the human body works.

    For instance, we don't even understand the mechanism by which biological evolution happens.

    We know that evolution happens but we don't know the process (or mechanism) by which it happens: It could also be aliens, it could also be God or it could also be magic?

    We just don't know.
     
  10. Gawdzilla Sama Valued Senior Member

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    You just don't know, you mean.
     
  11. pluto2 Registered Senior Member

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    What do you mean by that?

    The scientific bureaucracy doesn't want to admit that there is still a lot we don't know about evolutionary biology and how the human body truly works.
     
  12. Gawdzilla Sama Valued Senior Member

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    And how much do you know about the scientific bureaucracy? Met even one of them? Have then acknowledged your conspiracy ideas?
     
  13. Write4U Valued Senior Member

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    Some 500 diferent types of bio-molecules ~(1.2 x 10^27 billions of them) is all. And a few metals.
    https://en.wikipedia.org/wiki/Biomolecule#Types_of_biomolecules
     
    Last edited: Feb 16, 2018 at 12:26 AM
  14. DaveC426913 Valued Senior Member

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    Yes we do.

    Here is a primer in less than ten sentences:

    • A species is a population of organisms that interbreeds and has fertile offspring.
    • Living organisms have descended with modifications from species that lived before them.
    • Natural selection explains how this evolution has happened:
      • More organisms are produced than can survive because of limited resources.
      • Organisms struggle for the necessities of life; there is competition for resources.
      • Individuals within a population vary in their traits; some of these traits are heritable -- passed on to offspring.
      • Some variants are better adapted to survive and reproduce under local conditions than others.
      • Better-adapted individuals (the "fit enough") are more likely to survive and reproduce, thereby passing on copies of their genes to the next generation.
      • Species whose individuals are best adapted survive; others become extinct.

    Evolution is a fact. Walk into any fish breeder's or dog breeder's lab and they'll show you evolution in action.

    Now, what is not fact is evolution by natural selection. That is theory.
     

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