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Author | Topic: Nothing in biology makes sense except in the light of evolution. | |||||||||||||||||||||||||||||||||||||||||||
Taq Member Posts: 10085 Joined: Member Rating: 5.1
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CRR writes: Yes, dwise1, you're right. Calling Talk Origins atheist is as bad a characterising the Discovery Institute as Creationist. This is a common creationist tactic. When you can't deal with the science, just start casting aspersions about evolution being a religion or evolution being the product of atheism. Attack the messenger so you don't have to deal with the message.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1
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Faith writes: And honest observation should also lead to the recognition that at that point such a variation or race is too genetically depleted to evolve any further anyway. Honest observation should recognize that mutations continually increase genetic diversity in a population.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1 |
Dredge writes: Charles Darwin wrote the first science-fiction novel. If he were alive today he would be astonished that so many people have taken the contents of Origin seriously! Once again, absolutely nothing of substance from creationists in the face of mountains of evidence for evolution.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1
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Faith writes: No, that's just normal variation within a Kind, NOT evolutionary theory because the ToE is all about change from species to species, not just within a species. It is always claimed that microevolution IS evolution, what's to stop the changes from turning a reptile into a mammal? I've offered my own theory many times, but it has to be built into the limits of the genome itself for a particular species. If nothing else there is simply no evidence for evolution beyond the common variation of a Species or Kind. It's all theory, all assumption based on the theory. Let's go back to our simple gene and see how mutation, selection, and speciation work. We will start with Species OG (for original gangster).
Species OG allele A TTTTTTTTTTTTTTTTTTTT Speciation begins by the creation of two isolated populations of the OG population so that we have Species A and Species B
Species A allele A Species B allele A TTTTTTTTTTTTTTTTTTTT TTTTTTTTTTTTTTTTTTTT Mutation and selection occurs in each population, but since different mutations and selection pressures occur in each species they end up with different alleles:
Species A allele B Species B allele C TTTTTTTTTTTTTTTTATTT TTTTTTGTTTTTTTTTTTTT Those separate species have now diverged, all through microevolution. This same process occurs again.
Species A allele D Species B allele E TTCTTTTTTTTTTTTTATTT TTTTTTGTTTTTTTGTTTTT And it occurs again:
Species A allele F Species B allele G TTCTTTTTGTTTTTTTATTT TATTTTGTTTTTTTGTTTTT And it occurs again:
Species A allele H Species B allele I TTCTTATTGTTTTTTTATTT TATTTTGTTTTCTTGTTCTT Let's freeze time and compare these new species with the OG species
Species A allele H Species B allele I TTCTTATTGTTTTTTTATTT TATTTTGTTTTCTTGTTCTT Species OG allele A Species OG allele A TTTTTTTTTTTTTTTTTTTT TTTTTTTTTTTTTTTTTTTT That is macroevolution. We have reached the genetic divergence seen between what you would call separate kinds, and it all occurs through microevolution. Macroevolution is the accumulation of microevolutionary events, and when they occur in populations that are not interbreeding it produces divergence over time.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1
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Faith writes: Sure you can define anything to deny reality if you want. Surely you realize that this is exactly what you are doing.
And it doesn't matter what the source of variation is, the processes of evolution have to eliminate most of it to bring out a new phenotype. As shown above, that results in diverse species with different genomes, otherwise known as macroevolution.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1
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Faith writes: That is ridiculous. A few mutations in a population is not a new species. "Sure you can define anything to deny reality if you want."--Faith I told you. You are doing the very exact thing that you are accusing others of. Now you are trying to redefine species so that you can deny their existence. The alleles in my example have more differences than those found between chimp and human genes, and I would assume you would classify humans and chimps as separate species.
A new species -- really race or variation -- requires the proliferation of some alleles over others, a set of gene frequencies that usually differs from the original population, quite a bit in some cases. Over a number of generations inbreeding in each population will bring out the high frequency phenotypes and in some cases lose the low frequency phenotypes altogether until eventually you have two new population with two new separate phenotypic presentations. That is exactly what my model does, and it results in macroevolution.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1
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Tangle writes: It's an enormous acheivement, but of course if it hadn't been him it would have been someone else. This is something creationist don't register; the ToE is a discovery not an invention. The evidence is there in the world for anyone to find, it doesn't go away just because some prefer a fantasy world. In fact, Darwin rushed his work to publication because Alfred Russell Wallace was about to publish nearly the same theory. They co-published and co-presented their theories, but Darwin's work was more complete and better presented so he got the laurels. If it weren't for Darwin publishing we would be calling it Wallacian Evolution, which really doesn't roll of the tongue. Alfred Russel Wallace - Wikipedia If Darwin and Wallace had not published their theories, then it was nearly inevitable that someone else would have discovered and published the very same theory in short order. As the evidence mounted the theory of evolution was an inevitable conclusion.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1
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Dredge writes: For some reason, some words from a Supertramp song come to mind: "Dreamer; you're nothing but a dreamer." Yet another post where creationists can't address the facts.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1 |
CRR writes: Or how about this definition? What we are interested in is the criteria one uses to determine if two species belong to the same kind.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1 |
Dredge writes: An honest observation of thousands of years of animal and plant breeding suggests that Darwins' Tree of Common Descent is a Tree of Fantasy. If the tree is false, then show me a primate that isn't a mammal.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1 |
CRR writes: Well that's alright then, so long as you don't tie macroevolution to speciation, since if you can't identify if it's a new species you can't say macroevolution has taken place. The problem is that you deny examples where we can define them as separate species, such as humans and chimps.
As for kinds, well, we know them when we see them; just like you do with species. (sarcasm, in case you missed it) We define species as a population that is evolving together. How do you define "kinds"?
Actually I have elsewhere shown how we can infer that all cats, from tabby to tiger, are part of the one kind; and this is based on the fact that different species and genera of cats can and do interbreed. Perhaps we are actually on firmer biological ground talking about kinds rather than species. Just because they can interbreed does not mean that they are interbreeding. Again, species are defined as an interbreeding population that is evolving together. If there is no interbreeding then they are not evolving together. When you see genetic divergence between the populations then that is evidence for and the definition of speciation. Edited by Taq, : No reason given. Edited by Taq, : No reason given.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1
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CRR writes: I'm always quite puzzled when evolutionists think that defining kinds exactly somehow is "a problem for creationism". Creationists claim that a species can not evolve past the "kind" barrier. Evolutionists make no claims about a hard species barrier that a population can not go beyond. That's the difference. Therefore, it is incumbent upon the creationists to define what this barrier is.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1
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CRR writes: I think you have just managed to conclude that they are all the same kind and that in this case the kind includes more than one genera. In other cases a kind could include a single species. Then how do determine if two species belong to the same kind or not?
As with dogs and cats, being in the same kind does not automatically mean different members can interbreed. Nor does it mean there must be a chain of hybridization linking members. All it means is that they are descended from the same created kind. So how do you determine if two species share a common ancestor?
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Taq Member Posts: 10085 Joined: Member Rating: 5.1
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CRR writes: The biological discipline of systematics was developed to discover natural groupings of organisms, such as species. Systematics demonstrates that all life shares a universal common ancestor. Since you reject this finding, you can't claim that you are using systematics. You still haven't given a single test for determining if two species share a common ancestor. You don't have a test for determining if an allele for a shared gene came from the original kind. Everything you have said is just an assertion without any test for detecting it. Edited by Taq, : No reason given.
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Taq Member Posts: 10085 Joined: Member Rating: 5.1 |
CRR writes: A baraminology tutorial with examples from the grasses Can you discuss this webpage?
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