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Author Topic:   natural selection is wrong
Percy
Member
Posts: 22505
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.4


Message 87 of 276 (112412)
06-02-2004 1:27 PM
Reply to: Message 73 by Syamsu
06-02-2004 11:04 AM


Hi Syamsu!
What caused the gravelcolor of the guppy to be an adaptation was the introduction of predators. What caused the spread of gravelguppy's was it's fitness to reproduce.
Adaptation is a valuable descriptive term. Adaptation of a species to its environment is what happens when the guppies best suited for that environment survive to reproduce. The two terms, adaptation and survive to reproduce, are not independent. It is not a case of conflicting terms where only one can be used and not the other. They complement each other in helping us describe the nature of evolution.
Comparison is another valuable descriptive term, though I don't know if you could actually consider it part of evolutionary technical jargon. Comparisons happen all the time in nature. The faster vulture captures the prey and eats, the slower vulture starves. Nature has just made a comparison of speed of the two vultures. Or in the case of peacock tailfeather displays, the peahen compares the displays and makes a selection.
The term natural selection arose because of its clear relationship with the artificial selection practiced by breeders. In artificial selection, breeders select who reproduces and who doesn't. The criteria are whatever qualities the breeder considers desireable, such as appearance, or leanness of muscle. In natural selection, nature selects who reproduces and who doesn't. The criteria are whatever qualities permit the organism to survive long enough to reproduce and pass his genes on to the next generation.
I think you may be caught in a web of terms of your own definition. Even if you don't like the currently accepted definitions, you must use them or you'll simply continue as you've done for the past two years. As someone once said at town meeting (that's how local government happens in small towns in New Hampshire), one sure sign of insanity is to keep doing the same thing while expecting something different to happen. Your persistance is admirable, but it might be well past time to evaluate your strategy with an eye toward modifications.
--Percy

This message is a reply to:
 Message 73 by Syamsu, posted 06-02-2004 11:04 AM Syamsu has replied

Replies to this message:
 Message 97 by Syamsu, posted 06-03-2004 12:02 AM Percy has not replied

  
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