Gold_Certificate;4710544 said:Allopatric speciation is speciation that occurs due to a physical barrier that arises between populations of the same species. There was a physical barrier in the fruit fly experiment. Allopatric speciation has occurred if, as a result of generations of separation, the populations are reproductively-isolated and no longer reproduce together. The maltose and starch fruit fly populations no longer reproduced together at the end of the experiment.bambu;4708289 said:@Gold_Certificate & @Vibe.....
You're not in a position to be calling niggas out round these parts.......
bambu;4684310 said:Onus probandi – from Latin "onus probandi incumbit ei qui dicit, non ei qui negat" the burden of proof is on the person who makes the claim, not on the person who denies (or questions the claim). It is a particular case of the "argumentum ad ignorantiam" fallacy, here the burden is shifted on the person defending against the assertion.
Gold_Certificate;4682561 said:What claim did I make that requires support?
Gold_Certificate;4682561 said:They have.
Diane Dodd's fruit fly experiment observed that isolation of fruit flies and the changing their food resulted in reproductive isolation after 35 generations; which demonstrates a form of allopatric speciation.
The ongoing "E. coli long-term evolution" experiment has tracked genetic changes in over 50,000 generations of 12 initially-identical populations of E. Coli; some of which were larger cells in all groups, defects in 4 groups' DNA repair, the ability to metabolize citrate in one group, and an average of 10-20 fixated beneficial mutations per population.
So, plenty have observed bacteria and fruit flies macroevolve; not to mention the easily-observable microevolution.
bambu;4684093 said:This is the sort of result we'd expect, if allopatric speciation were a typical mode of speciation.
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Diane Dodd’s fruit fly experiment suggests that isolating populations in different environments (e.g., with different food sources) can lead to the beginning of reproductive isolation. These results are consistent with the idea that geographic isolation is an important step of some speciation events.
Gold_Certificate;4682561 said:I did not claim this. It is a quote you posted, and it refers to the expectations of whoever wrote it.
bambu;4684093 said:The experiments only showed that these creatures have practical limits to the amount of genetic change they can tolerate. When those limits are breached, the creatures don't evolve—they just die.
LOL...Really???
These claims are false....As I have already shown, no new species has been observed in any research....
Your evolutionary terminology describes change over time/biological mutation, which is universally accepted and not in question here....
Today's topic is the origins of species.....
So for your experiments to observe macro-evolution, the scientists would have begun with Drosophila melanogaster (common fruit fly) and ended with a new or evolved species......
I said this "demonstrates a form of allopatric speciation"; which it does.
If you are able to refute it, go ahead.
If not, there is no need for you to respond, since you already acknowledge that biological evolution occurs.
@Gold_Certificate....
I acknowledged biological change over time.......
You said...
Gold_Certificate;4684093 said:After speciation, the will be more than one species; so the "new" species will be the recently-speciated ones.
Today's topic is the origins of species.....
So for your experiments to observe macro-evolution, the scientists would have begun with Drosophila melanogaster (common fruit fly) and ended with a new or evolved species......
There is no need for you to respond until you decide to join the debate on the origins of species.....

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