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Evidence for macro-evolution

B

BobMiller

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Hello


I think we should have a thread that is dedicated to show evidence for macro-evolution.

I do know we have "the quiet thread," but I think we should have a thread which is lighter, and easier for the average Joe to understand.


The purpose of this thread:
To provide evidence for macro-evolution


Rules:
1) no belittling, insults, or derogatory comments.
2) No debating whatsoever/ If a creationist wants to debate the material on this thread, please copy and paste the material and start a new thread.
3) cite your sources
 
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Late_Cretaceous

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Well there just happens to be a list of Oberved Instances of Speciation right here.

Thats right, since you defined macroevolution as being
Large scale change(evolution) occurring over a long period of time that results in the formation new species.

this should fit the bill nicely. More then 2 dozen new species that have evolved in the wild and in the lab that have been observed.
 
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Late_Cretaceous

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Ok, let me guess what the next step is (since I have seen this about 40 times). The counter point will be that "well they are still fruit flies, salamanders, yew plants,..., now instead of species pretend that I really ment to say kind. But guess what, I won't define kind ok."
 
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Late_Cretaceous

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We also have evidence from the fossil record of transitions between different kinds, oops I ment species, of dinosaurs.

http://www.don-lindsay-archive.org/creation/horner.html
 
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Lilandra

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I think that it is pretty simple to follow.

I would like to answer the claim that evolution is restricted within species and is no more than genetic diversity within a species group. Remembering that a species is typically defined as a population of animals that typically reside in the same geographic location that generally do not breed with another group of animals.

There are several reasons (isolating mechanisms) why different species restrict gene flow within their own group.


· Ecological isolation. Species occupy or breed in different habitats. Ex. The kit fox (Vulpes aelox) and the artic fox (Alopex lagopus). The Artic Fox in the extreme north is a good example of genetic isolation because its geographic isolation from other small canids has resulted in enough genetic drift that it is considered a different genus. All canids can still interbreed despite being dispersed around the globe because of the ability of large canids like the American Gray Wolf to cross vast distances.

Gray wolf


http://www.thewildones.org/Animals/grayWolf.html.

The Gray Wolf is known to cross 1000s of kilometers in its own lifetime. Genetic exchanges between Gray wolves and coyotes are threatening the Red Wolf (has an intermediate size between the 2 other species) population with extinction.

redwolf






http://www.fws.gov/alligatorriver/redwolf.html.

coyote


http://www.coyotes-coyotes.com/coyotes-pictures.htm.

· Temporal isolation can happen when different species even in the same geographic location do not to breed because mating occurs during different seasons or even different parts of the day.

· Behavioral isolation occurs when a species prefers to mate within its own group. Differences in courtship rituals for example.

· Mechanical isolation is when 2 species are physically incapable of breeding even if they wanted to.

After mating there are isolating mechanisms like lack of viable or sterile offspring. Like a horse and donkey producing a mule.

Isolating mechanisms do more than restrict mating within an ancestral group they drive evolution. Speciation occurs because groups within an ancestral group of animals become isolated by any of the above mechanisms. Genetic drift (differences in DNA recombination in a breeding population) results from the isolation. More marked genetic differences are selected for by the animal’s environment. Size for example may be selected for in animals that take large or small prey.

There are 34 different species of canids in the Canidae family. Canids exhibit diverse morphological changes due to the diverse habitats they inhabit around the world. Moreover morphological changes have been observed and even artificially selected for by humans. No one disputes that the Jack Russel Terrier and Gray wolves are related despite a profound difference in appearance. In fact, appearances can be deceiving as the Gray Wolf and domestic dogs are vastly more genetically similar than different. MtDNA sequencing shows a .02 difference between Canus lupus and

Canus lupus familiaris.


Now either God specially created all 34 species of dogs to appear related or they obviously are. 34 species of canids are part of a total 1.4 million known living species of organisms on the planet Earth. These species are a small portion of the species that have inhabited the Earth. Again either similarities used to group these species taxonomically are inherited or created to look as though they were inherited.

http://faculty.uca.edu/~johnc/evolution_and_diversity1441.htm.



How many species?

1.4 million (maybe up to 100 million)

-insects highest number: ~750,000 with 290,000 Coleoptera (beetles)

I will stop here if anyone wants to discuss speciation and its relationship to evolution.




Sources

http://www.idir.net/~wolf2dog/wayne1.htm

http://www.talkorigins.org/faqs/faq-speciation.html#part4
 
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Late_Cretaceous

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Here is an excellent article with a section on just what Bob is looking for

 
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AV1611VET

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NxNW

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Large scale change(evolution) occurring over a long period of time that results in the formation of new species.
Nobody doubts speciation. Nobody. It has been observed in the lab and in nature on many occasions.
 
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What line?

Between a species giving rise to a species, and a species giving rise to a new genus?

The former is microevolution; the latter is macroevolution.
 
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NxNW

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Between a species giving rise to a species, and a species giving rise to a new genus?

The former is microevolution; the latter is macroevolution.
If we accept that speciation happens (and everyone does), and we agree that a genus is simply a collection of related species, I don't see what the problem is with speciation happening more than once to form a new genus. Maybe you can explain the obstacle you perceive?
 
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AV1611VET

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Horses don't become giraffes.

Horses simply give rise to related species; and giraffes simply give rise to their related species.

"Kind" in the Bible is the same as "genus" in collegiate circles.

And God said animals will multiply "after their kind."
 
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