lucaspa said:
They do? Please cite some examples. All the examples I have seen of speciation has the new species completely able to reproduce within that species -- breed after its kind. Here are two examples of observed speciation where the new species is able to viably reproduce:
1. Speciation in action Science 72:700-701, 1996
1. N Barton Ecology: the rapid origin of reproductive isolation Science 290:462-463, Oct. 20, 2000.
www.sciencemag.org/cgi/content/full/290/5491/462 Natural selection of reproductive isolation observed in two cases. Full papers are: AP Hendry, JK Wenburg, P Bentzen, EC Volk, TP Quinn, Rapid evolution of reproductive isolation in the wild: evidence from introduced salmon. Science 290: 516-519, Oct. 20, 2000. and M Higgie, S Chenoweth, MWBlows, Natural selection and the reinforcement of mate recognition. Science290: 519-521, Oct. 20, 2000
Why? Did your mother have become infertile after you were born?
I don't even understand what that last sentence is asking so I don't know how to answer it. I did not say that the observations alway suggest infertility, but rather that some did suggest reproductive problems. I noticed you said "breed after its kind" as everyone on this forum will tell you, we have no definition for kind, so you need to explain what you mean by that. Do you know a definition that no one else here knows or are you reading into the theory so as to make a point? BTW, it is not about E vs. C it is about whether or not the evidence is overwhelming (I thought I would mention this now because before when I have humored those here by answering such question, they have gotten way off topic, and then accused me of not addressing the issues) So then on two levels, we have this information being inconclusive. level one, many of the evidences of speciation presented on this thread, allow for doubts as to the viability of the breeding of the "new" species. Inconclusive evidence for or against. and level two, this information is not unique to the TOE, and at least in part is permitted in the original theory of C.
WHOA! We are not talking about individual organisms, but about populations of organisms. The composition of the population changes over generations.
Right, I get that, I have gotten it for several posts now, but populations are made up of individuals and if none of the individuals are viably able to reproduce, we have no population. Populations always start with two individuals, not hundreds or thousands, for it to become a population, it is necessary for viable breeding to happen. If none of the population are viable breeders, there is no population. But, I am all wrong, it is all about that mysterious population that just occured, (not because of design mind you). As I was taught the TOE everything evolved from a single cell. What caused that first living cell to "breed" when it became a viable living organism, where was the population that allowed it to mate, thus beginning the evolutionary process. Oh I forgot, we can't ask such questions because there is overwhelming evidence to support the TOE, therefore there are no unanswered questions remaining. I keep forgetting that, I have been told that enough here that you would think that I got it by now. I'm just dense and stupid I guess.
Species is not an individual organism. It is a group of organisms that can interbreed to make fertile offspring.
And yet the whole theory of E is reduced to one organism? Hummm, sounds like a strong theory to me. NOT. If it began with a single organism, then it must also stand or fall as an individual organism.
Now, take a species and split it into 2 populations that cannot be in contact. Across a river, a mountain range, different cages in a lab. Call the original population A and the split one B. Have B face a different environment than A so that B adapts to the new environment over at least 2,000 generations. Then bring B back into contact with A. What you find is that B can't interbreed with A anymore. Now, members of A can breed with other members of A and members of B can interbreed with other members of B. But members of B either won't mate with members of A, can't mate, or the offspring of such mating are not fertile.
What we have now is two species where we originally had one. This is allopatric speciation.
No species went extinct.
Right, but in this case, we are not talking about the ability to reproduce, obviously, they can reproduce. How are we missing this? It is in the continued "evolving" that we see possible reproductive problems.
And that't the flaw of your argument. Your premise -- the "if" -- is wrong. Since the premise is wrong, your conclusion is wrong. Here is your conclusion:, Again, wrong premise, so the conclusion is wrong: Nope. Evolution occurs among populations of living organisms.
But, how is it illogical to claim that populations are made up of living organisms, just like the whole thing supposedly began with one living organism, and therefore, your proof is short about a few million organisms. The TOE is based on the idea of a single organism, not a population of organisms. If, only a couple of the "new" species were not viable breeders, then your arguement would hold water, but if the entire population, even if that population is 1 or 2 strong, have reproductive problems, the whole arguement fail to offer proof. Now I won't do like some here and claim that that disproves the theory, but it certainly falls short of overwhelming evidence.