[Rduke55]

[Quote] However, the example you choose to put forward involves 1) concious effort on the part of the breeder to select mutations

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But the mutations' occurence are still random. Even in a relatively small genetic population like dogs (I'm talking originally - at the beginning of selective breeding) you can get wildly different organisms (for example, greyhound vs. bulldog) resulting from selection.

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2) results in minor ( in relation to the differences between an ameoba and a human ) differences that remain constrained by a ( and I am going to get the word wrong ) phylum or genus of a animal specie.

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You're taking the extremes. Over the relatively short period breeders have created large differences between the wild animals and the result of breeding.

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No breeder has ever turned a Clydesdale into a Pug.


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Neither has evolution. It doesn't work like that.

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But my question wasn't "Has any scientist caused speciation in single-celled organisms?"; I was actually quite specific in my question, and the effect I was asking about was very limited. You did not respond to that question, it really should be a simple one: "Yes and here is a citation" or "No, actually no one has documented that yet."

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Resistance to antibiotics last for more than 2 generations. I'm not sure what you were asking then. You asked for an example, I gave one.

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If there were zero mutations could you have evolution?

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No.

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only that a strain becomes more prevelant in that environment.

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This is the whole point of natural selection.

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Evolution would require that there were non-resistant strains which mutated and one of those mutations was resistance: such an environment should be reproducible and testable -- has it been?

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The point is that there was variation already in the population of bacteria. The selection pressure was the antibiotics.

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Does the information that specie A's DNA differs from specie B's by 2% neccessarily require that they at some point shared an ancestor specie C?

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See a previous thread's Vitamin C explanation for an example.

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ID explains, but ID isn't science.

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It's not falsifiable.

And after reading the other responses I should have said "Most mutations that affect phenotype are harmful" because most mutations are in the intron, etc. and are neutral.

P.S. Sorry for the curt replies. I have a ton of crap to do today. The funny thing is most of it involves a manuscript on evolution [img]/images/graemlins/tongue.gif[/img]