"Natural selection" is it for real ?

Discussion in 'Biology & Genetics' started by cyber_indian, Oct 28, 2005.

  1. cyber_indian Registered Senior Member

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    Can somebody explain me how is it possible to have on one hand "Natural selection", on the othrer hand knowing that every possible gene has it's "unique number" ?
     
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  3. spuriousmonkey Banned Banned

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    what do you mean by unique number?
     
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  5. superluminal . Registered Senior Member

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    Genes are just instructions for making different kinds of proteins that do different jobs like making bone or skin or eyelashes. Natural selection works on small changes to the genes. If a change ocurrs (usually fatal or neutral) the organism dies at birth or fails to reproduce successfully. Birth defects are opportunities for natural selection to work. In the rare case where a "birth defect" has a survival advantage, the "defect" may be passed on and become prevalent in a population.

    Not sure why you are concerned about the "unique" position of a gene (made up of many nucleotides) in the sequence.
     
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  7. cyber_indian Registered Senior Member

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    Getting the 3codons before ATG and the 3codons after the TGA, together makes uniquie indentifyer for every gene.
     
  8. Ophiolite Valued Senior Member

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    And why should that in any way create a contradiction with natural selection?
     
  9. cyber_indian Registered Senior Member

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    How do you explain a organism making up a new type of gene and at the same way this new gene has different indentifyer than the already existing genes ?
     
  10. superluminal . Registered Senior Member

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    All that genes have is "start transcribing" and "stop transcribing" markers. There is no unique identifier as you are thinking about it. Like "tihis is gene #69345227". Organisms don't run out of sequence space. Existing genes are modified by mutation. Or a new gene arises when the start/stop messages get garbled and new sections begin to get transcribed. Usually very, very bad for the organism. Yes?
     
  11. Aer Registered Senior Member

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    Organism gets garbled? Something new takes its place? Sounds like superluminal wants a sex change.
     
  12. superluminal . Registered Senior Member

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    Aer,

    Your Witlessness is Asstounding as usual.
     
  13. DaleSpam TANSTAAFL Registered Senior Member

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    Natural selection is for real: if you die without reproducing then your genes do not get passed on. Simple as that.

    Although I have not heard of any gene ID number, it would be irrelevant to natural selection.

    -Dale
     
  14. cyber_indian Registered Senior Member

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  15. Aer Registered Senior Member

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    Cute. Clever? No.
     
  16. DaleSpam TANSTAAFL Registered Senior Member

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    Before or after, including or not, so what? It's completely irrelevant to natural selection. Although genes are the mechanism for inheritance any mechanism would demonstrate natural selection. Natural selection is a property of inheritance not genes; if you die before you procreate then no inheritance.
    I certainly won't be downloading any perl scripts from unknown sources.

    -Dale
     
  17. Ophiolite Valued Senior Member

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    Cyber Indian assume we aren't that bright. Explain to us the details of your idea, please.
     
  18. cyber_indian Registered Senior Member

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    The idea grasps huge area in different sciences.
     
  19. cyber_indian Registered Senior Member

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    But the main idea is to use genetics to comple a method gatheing all the ecosystem on bacterial level, deliver it to another planet and using viruses as delivering tools and carefull numbering assemble the ecosystem again, but while assembling the ecosystem make shure it selffitting to the new enviromen.
    Once reached the target plannet the whole assemble unveil like a domino effect.
     
    Last edited: Oct 29, 2005
  20. valich Registered Senior Member

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    3,501
    Aren't we getting a little off track here? Natural selection is like a culling process, as stated above. Organisms with beneficial traits are more likely to survive and reproduce and pass on those genetically inherited traits: survival of the fittest. But as I've stated before, since we as humans are now able to control Artificial Selection, Natural Selection does not always apply.
     
  21. cyber_indian Registered Senior Member

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    Pretty much both processes look alike:
    -assemble the ecosystem again ... but while assembling the ecosystem, make shure it selffitting to the new enviroment
    -is like a culling process ... Organisms with beneficial traits are more likely to survive and reproduce and pass on those genetically inherited traits: survival of the fittest.

    "Natural selection" uses blackboxing and we believe that we know how the whole process started, and also beleive that the source of new genes is destuctive mutations.
     
  22. DaleSpam TANSTAAFL Registered Senior Member

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    Very true. Case in point: all of the ugly, stupid, sick people in the world that have no trouble passing on their genes.

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    -Dale
     
  23. spuriousmonkey Banned Banned

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    And don't you completely miss the point of artificial selection.
     

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