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Author Topic:   Where do Creationists think the Theory of Evolution comes from?
RAZD
Member (Idle past 1435 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 74 of 109 (262918)
11-24-2005 11:40 AM
Reply to: Message 72 by Nadine
11-24-2005 7:38 AM


welcome to the fray nadine.
do you think it is possible that the rate of mutation has evolved to match an equilibrium point with change in the environments?
that this too can react to sudden massive changes, such as mass extinctions and toxic waste?
I believe there is evidence for this.
Enjoy.

we are limited in our ability to understand
by our ability to understand
RebelAAmerican.Zen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.

This message is a reply to:
 Message 72 by Nadine, posted 11-24-2005 7:38 AM Nadine has replied

Replies to this message:
 Message 75 by Nadine, posted 11-24-2005 2:44 PM RAZD has replied

  
RAZD
Member (Idle past 1435 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 77 of 109 (262981)
11-24-2005 3:48 PM
Reply to: Message 75 by Nadine
11-24-2005 2:44 PM


yes, I am aware of the bacteria evidence. I am thinking more on the lines of larger organisms that could control the rate of mutation through a simple switching {mechamism\protein concentration}.
I also know foraminifera that there was an observed increase in differentiation of {species\forms} after the K\T boundary extinction asteroid event:
Geology Dept article 3
Drs. Tony Arnold (Ph.D., Harvard) and Bill Parker (Ph.D., Chicago) are the developers of what reportedly is the largest, most complete set of data ever compiled on the evolutionary history of an organism. The two scientists have painstakingly pieced together a virtually unbroken fossil record that shows in stunning detail how a single-celled marine organism has evolved during the past 66 million years. Apparently, it's the only fossil record known to science that has no obvious gaps -- no "missing links."
The study focuses on the microscopic, fossilized remains of an organism belonging to a huge order of marine protozoans called foraminifera. Often heard shortened to "forams," the name comes from the Latin word foramen, or "opening." The organisms can be likened to amoebas wearing shells, perforated to allow strands of protoplasm to bleed through. The shell shapes range from the plain to the bizarre.
But it's the planktonic variety that chiefly interests Parker and Arnold. Unlike their oversized cousins, free-swimming forams are found wherever the oceans have, or had, currents -- in a word, everywhere. For nearly a century, geologists have used the animals' tiny, fossilized shells, found in abundance in marine and some terrestrial deposits, to help establish the age of sediments and to gain insight into prehistoric climates.
"This is the same organism, as it existed through 500,000 years," Arnold said. "We've got hundreds of examples like this, complete life and evolutionary histories for dozens of species."
Counting both living and extinct animals, about 330 species of planktonic forams have been classified so far, Arnold said. After thorough examinations of marine sediments collected from around the world, micropaleontologists now suspect these are just about all the free-floating forams that ever existed.
"We've literally seen hundreds of speciation events," Arnold added. "This allows us to check for patterns, to determine what exactly is going on. We can quickly tell whether something is a recurring phenomenon -- a pattern -- or whether it's just an anomaly.
One of the last great extinctions occurred roughly 66 million years ago, and according to one popular theory it resulted from Earth's receiving a direct hit from a large asteroid. Whatever the cause, the event proved to be the dinosaurs' coup de grace, and also wiped out a good portion of Earth's marine life -- including almost all species of planktonic forams.
This period of mass death, which ended the Cretaceous Period, ushered in the modern chapter of biological development. Earth entered the new era, the Cenozoic, with a wide range of ecosystems virtually devoid of life, yet quite fertile and primed for repopulation.
Like ecologists who study how wildlife recovers from a forest fire, evolutionists are drawn to such incidences of "biological vacuum" in search of clues as to how the earliest forms of life started evolving, when competition wasn't the controlling factor in the process.
Since the foram record extends through a major extinction event (some of the samples date back nearly 100 million years), it represents the first, grand template against which a flock of pet theories on the beginnings of evolution may now be effectively measured, he said.
"This is the great naturalist experiment," says Parker. "How often is it that you get to almost wipe your slate clean and then watch an ecosystem start up all over again?"
As revealed by the ancient record left by the foram family, the story of recovery after extinction is every bit as busy and colorful as some scientists have long suspected.
"What we've found suggests that the rate of speciation increases dramatically in a biological vacuum," Parker said. "After the Cretaceous extinction, the few surviving foram species began rapidly propagating into new species, and for the first time we're able to see just how this happens, and how fast."
As foram survivors rush to occupy their new habitats, they seem to start experimenting will all sorts of body shapes, trying to find something stable, something that will work, Arnold said. Once a population in a given habitat develops a shape or other characteristic that stands up to the environment, suddenly the organisms begin to coalesce around what becomes a standardized form, the signature of a new species.
As the available niches begin to fill up with these new creatures, the speciation rate begins to slow down, and pressure from competition between species appears to bear down in earnest. The extinction rate then rises accordingly.
Enjoy.

we are limited in our ability to understand
by our ability to understand
RebelAAmerican.Zen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.

This message is a reply to:
 Message 75 by Nadine, posted 11-24-2005 2:44 PM Nadine has not replied

Replies to this message:
 Message 101 by RAZD, posted 03-22-2007 9:08 PM RAZD has not replied

  
RAZD
Member (Idle past 1435 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 101 of 109 (390994)
03-22-2007 9:08 PM
Reply to: Message 77 by RAZD
11-24-2005 3:48 PM


email reply for ICANT
I received the following email with this reply\question\comment from ICANT:
(also see Message 168 and Where do Creationists think the Theory of Evolution comes from?, Message 77)
I visited your site and found it very interesting I disagree on some things but I like a lot or what I have read so far.
I was browsing and read the thread "Where do Creationists think the Theory of Evolution comes from?
Your post message 77 referenced a web site Geology Dept article 3
I visited it and read what was there then I tried to find more and it seems that was the end of the experiment.
I am very puzzled as it says there are complete fossils records like a book with every page and word intact.
I quote your quote:
"This is the same organism, as it existed through 500,000 years," Arnold said. "We've got hundreds of examples like this, complete life and evolutionary histories for dozens of species."
If after 500,000 years the best evolution could do was to create 330 different species, how long would it take for one of those forams to crawl up on land and walk around?
After 500,000 years it was still classified as free-floating forams.
Is there other web sites that clarify these findings?
I'll post my answer here, and let others comment as well:
I am very puzzled as it says there are complete fossils records like a book with every page and word intact.
Don't confuse a single "book" with the complete compilation of all known books. This is just one area where almost all the species are known - ones that fall into the foraminifera order (a taxonomic grouping above "family" "genus" and "species") for the time period in question. See Message 4 for more explanation and a discussion of what this evidence means for evolution.
If after 500,000 years the best evolution could do was to create 330 different species, how long would it take for one of those forams to crawl up on land and walk around?
First, something like 2.5 billion years passed between the first single cell life and the first multicellular life - as recorded in the fossil record - so evolutionary expectations would be low if expected at all ... Evolution is not driven to become some predetermined end or result, and thus would not think it necessary for these forams to evolve into something walking on land. For evolution they just need to continue to survive and reproduce to be succesful. After 3.5+ billion years of evolution there is not only still single cell life, but single cell life very similar to those first fossils found (cyanobacteria) that are 3.5 billion years old: why should the forams be any different?
See http://www.resa.net/nasa/origins_life.htm for more.
Then it took another half billion years before the first rudimentary life moved onto land (again according to the fossil record)
See Timeline of the evolutionary history of life - Wikipedia for basic time-lines.
The predominant form of life on this planet is still single cell. This is because single cellular life is succesful at survival and reproduction: the requirements set by evolution for continued existence.
See Image - Wikipediahylogenetic_tree.svg and note that the very right hand end has three small "branches" for all the multicellular life forms (I used to have a link to an interactive tree that you could zoom in on each branch, but I had a computer crash and had to rebuild from ghost image 6 months old - at least I had that backup eh?).
Second, IF forams evolved into something that moved onto land and out of the sea, how would the evidence for that show up in the fossils of sea life in the sediments? How would you know whether they had or not - wouldn't you be looking in the wrong place?
After 500,000 years it was still classified as free-floating forams.
And dogs would always still be dogs - whether they evolve wings, tentacles and x-ray vision ... or not.
Of course what you see here are still free-floating forams, because that is what they were looking for. Think of it this way: instead of looking for what forams might evolve into, this study shows the evolutionary history of current foraminifera. It does NOT show the evolutionary history of other organisms that may or may not have evolved from earlier forams -- those are removed from the study because ... they are not identified as free-floating forams for the study. Any multicellular life fossils would not be included.
In the same way we can trace the history of modern cyanobacteria back to those first fossils of life by looking at all the fossil evidence for cyanobacteria in the records known. All other single cell life and what evolved from them would be neglected as not being in the cyanobacteria group being sought out for the study.
Is there other web sites that clarify these findings?
One of the best ones is this foram forum, where you can ask questions and have actual professionals in the field(s) answer. They will be happy to load you down with more information than you thought was possible on many somewhat esoteric topics.
That's part of the fun.
Enjoy.
and welcome to the fray.
Edited by RAZD, : subtitle
Edited by RAZD, : No reason given.

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we are limited in our ability to understand
by our ability to understand
RebelAAmericanOZen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.

This message is a reply to:
 Message 77 by RAZD, posted 11-24-2005 3:48 PM RAZD has not replied

Replies to this message:
 Message 102 by ICANT, posted 03-22-2007 9:48 PM RAZD has replied
 Message 104 by ICANT, posted 03-27-2007 2:07 PM RAZD has not replied
 Message 105 by ICANT, posted 03-27-2007 2:23 PM RAZD has replied

  
RAZD
Member (Idle past 1435 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 103 of 109 (391002)
03-22-2007 10:03 PM
Reply to: Message 102 by ICANT
03-22-2007 9:48 PM


Re: email reply for ICANT
Cool. Take you time with it, and if you have any questions feel free to ask.

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we are limited in our ability to understand
by our ability to understand
RebelAAmericanOZen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.

This message is a reply to:
 Message 102 by ICANT, posted 03-22-2007 9:48 PM ICANT has not replied

  
RAZD
Member (Idle past 1435 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 106 of 109 (391892)
03-27-2007 10:19 PM
Reply to: Message 105 by ICANT
03-27-2007 2:23 PM


Re: email reply for ICANT
(Message 104)
Arnold claimed to have the complete library.
Take all metaphors with a grain of salt.
(message 104 cont)
That sounds like wonder dog the cartoon.
The point being that no matter what evolves from current dogs they will still be descendants of dogs - they will still be in the dog clade, or as creationists like to say (demonstrating a misunderstanding of evolution in the process) they will always be dogs.
(message 104 cont)
Fun aside I am a farm boy so I know about different breeds of dogs, hogs, cows, chickens. Different types or corn, cotton tobacco tomatoes. So I can understand about different types of forams.
I also know that the most amazing tool we had on the farm was a mule and the only way you could produce one was to cross a jack and a mare. You could not create a new species of mules that could reproduce.
This infertility is evidence of speciation between horses and donkeys. There are similar hybrids between horses or donkeys and zebras. Being able to produce (albeit sterile) offspring is also evidence of close relationships of horses, donkeys and zebras - and of their descent from a common ancestor population that split up at some time in the past into these sub-populations that have become daughter species.
We see similar genetic hybrids being made by artificial insemination between other closely related species, even though some have been separated for considerable time - compared to our experience. You may have heard of Ligers, as another such example (lion tiger hybrid), but the most distant one I am aware of is the one between a camel and a llama.
Cama (animal) - Wikipedia
Some kind of isolation - either geographical or behavioral - separated the sub-populations. Then over time each sub-population acquired different mutations, and different mutations were selected by their interactions with the environment(s) and mate(s) until sufficient difference had accumulated that the sub-populations were no longer sufficiently inter-fertile to produce breeding offspring. They have not reached the point (yet) of accumulating sufficient differences that total loss of inter-fertility will occur (nor is it necessary for them to do so, it's just a possibility, and depends more on how much {stasis in a stable environment} versus {genetic drift in a population) occurs in the daughter-populations ... and whether or not the wild stock goes extinct).
quote:
...artificial insemination was required to impregnate the Llama female (matings of llama male to Dromedary female have proven unsuccessful). ... A second Cama (female) has since been produced using artificial insemination. Because Camels and Llamas both have 74 chromosomes, scientists hope that the Cama will be fertile.
This of course also raises the question of what really is a species. Will the Cama become a new species if it breeds? Species has been a human invention of classification rather than a had and fast distinction between individuals in closely related populations. It is more of a functional division than anything else.
(message 105)
Are you stating here that all living life forms came from the first single cell life form?
Not necesarily. What I am saying is that the evidence for the first life is single cell and 3.5 billion years old. This is also the oldest piece of sedimentary rock found that would be capable of preserving fossils of early life - all older rocks found so far have been transformed by {metamorphic\volcanic} processes that would destroy such evidence. This means we are left with the origin of life undefined and undefinable by the fossil evidence (other than being older than the 3.5 billion year old rocks). It's like losing old family pictures in a house fire.
Then the first evidence of multicellular life is about a billion years old. This most likely evolved from a single cell life, and there are studies made of some single cell life that adapts a multicell group clustering under certain conditions. See
King Lab - UC Berkeley
Whether there was a single original cell or not is mute at this point -- the evidence cannot tell us this answer, so the best answer is "we don't know" - it may be one cell line, it may be several that exchanged genetic information through horizontal gene transfer, a form of single cell "sex"?
Page Not Found | HHMI BioInteractive
If so how long did it take that single cell life form to come into existence?
Where did it come from?
What caused it to come into existence?
There is about a billion years from the formation of the earth and the first evidence of life noted above. Where did it come from is a question we don't know - and likely can't know - the answer to due to the problem of destruction of the evidence. What caused it is also anyones guess at this point - we don't have any evidence of how if formed so it is not possible to define the causes (with evidence).
This is really about abiogenesis (which is separate from evolution) and is an interesting topic in it's own right. For some of my take on this see RAZD - Building Blocks of Life
Remember you are talking to a very old ignorant person when it comes to evolution so keep the answers simple and straight to the point or it will go right over my head. Thanks
We can compare notes and see who is older (which is no barrier to learning) and see where my knowledge is ignorant compared to yours.
There are many things I have learned at this forum (such as the single cell conjugation linked above)
Enjoy.

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we are limited in our ability to understand
by our ability to understand
RebelAAmericanOZen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.

This message is a reply to:
 Message 105 by ICANT, posted 03-27-2007 2:23 PM ICANT has replied

Replies to this message:
 Message 107 by ICANT, posted 03-28-2007 1:46 AM RAZD has replied

  
RAZD
Member (Idle past 1435 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 109 of 109 (391996)
03-28-2007 1:22 PM
Reply to: Message 107 by ICANT
03-28-2007 1:46 AM


................. (subtitle changed for Adminnemooseus)
I am 67 years old married to the same woman for 50 years come June 3rd. I have a Bible Language Diploma from Florida Baptist College.
I'm 60 (just) married second time for 25 years come April. I have 3 degrees, one a Masters that with a little more classes would have included a minor in microbiology. My brothers also have science degrees, one in astronomy and one in oceanography. My interests are eclectic with a strong interest in anthropology and archeology.
I just want to learn all that I can so I can be the best that I can be.
Learning never ends eh?
I want to thank you for being completely honest with me as I was expecting a song and dance. So much for my judgement of character from just reading other posts.
I think the case for evolution is strong enough that one does not need to overstate the evidence. There are things we know and things we think we know and things we hope are true.
I believe that species change over time for many different reasons.
And that is all that evolution really requires. To me the real debate on creation vs evolution is not whether evolution occurs, but whether there has been enough time for all the diversity we see to have evolved. I believe there is, and that the evidence for an old earth is extensive and persuasive. It was geologists before Darwin that were finding evidence of old age: Lyell was one that had an influence on Darwin's recognition that with long time the small changes could add up to the diversity we see.
Charles Lyell - Wikipedia
The debate really is how far back the common ancestors go, not that evolution has occurred since then.
I think the evidence for an old earth is pretty overwhelming, and that any argument for a young earth is similar to the arguments for a flat earth or a geocentric universe: falsified by the evidence that contradicts it. See Age Correlations and an Old Earth: Version 1 No 3 (formerly Part III) age correlations 1.3 for more on this issue.
Perhaps there was only ever one "kind" of life on earth. We don't know eh?
I gather you live and breath evolution from the posts I read especially the Great Debate. I also believe you have a lot of good qualities that I saw in the articles I read on your site.
Thanks. My dad taught Zoology at U.Mich and ecology at Harvard (and knew Gould). My mom was a child psychologist (why I am so normal).
Enjoy

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compare Fiocruz Genome and fight Muscular Dystrophy with Team EvC! (click)


we are limited in our ability to understand
by our ability to understand
RebelAAmericanOZen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.

This message is a reply to:
 Message 107 by ICANT, posted 03-28-2007 1:46 AM ICANT has not replied

  
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