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When we talk about "evolution," we don't mean, "any kind of change." Nor do we mean minor variations that result from natural selection. We use the term "evolution" to mean, “The doctrine that unguided natural forces caused chemicals to combine in such a way that life resulted; and that all living things have descended from that common ancestral form of life.”
Originally posted by theophilus40
When we talk about "evolution," we don't mean, "any kind of change." Nor do we mean minor variations that result from natural selection. We use the term "evolution" to mean, “The doctrine that unguided natural forces caused chemicals to combine in such a way that life resulted; and that all living things have descended from that common ancestral form of life.”
The truth is that there is a lot of scientific evidences that contradicts this belief but this evidence is generally ignored by scientists and most people are unaware of it.
There is evidence that life on this planet can and will adapt this is what they call micro-evolution and it is really about the only thing the theory has going for it. Where the entire thing falls apart is at macro-evolution
Originally posted by Quadrivium
I like how you get so many saying "that is not the correct definition of evolution" yet they do not give what they believe to be the true definition.
This is because many in the evolution camp can not agree on one definition.
There is evidence that life on this planet can and will adapt this is what they call micro-evolution and it is really about the only thing the theory has going for it.
Where the entire thing falls apart is at macro-evolution. It is just one big load of bunk.
Quad
Evolution is generally defined as changes in trait or gene frequency in a population of organisms from one generation to the next. This has been dubbed the standard genetic definition of evolution. However, the standard definition of an indivisible gene "as beads on DNA strings" has proven elusive, having no clear beginning nor end, and RNA is now seen as an important part of the heritable or transcribable information package. Evolution covers a much broader scale of study than the competitive fitness of genes, including theories on variation, form, function, adaptation, and how observable patterns at various levels of biological organisation fit into history of the Earth. Evolutionary theory explains macroevolutionary phenomena, such as species formation and divergence, to microevolutionary processes within individual organisms, cells, and biomolecules such as chromosomes, DNA, RNA, and proteins.[16][17][18]
Evolution originally referred to the unfolding of life, but it has since come to generally refer to Darwin's lasting theories on natural selection and principles on variation. Natural selection is only one of several mechanisms in the theory of evolutionary change that famously explains how organisms historically adapt to changing environments. The principles of heredity were re-discovered in 1900, after Darwin's death, in Gregor Mendel's research on the inheritance of simple trait variations in peas.[19] Subsequent work into genetics, mutation, paleontology, and developmental biology expanded the applicability and scope of Darwin's original theory. Evolutionary biologists constantly apply their theories in experimental research on the heritable characteristics of individuals that interact and reproduce to form lineages of biological populations. Genetic drift, gene flow, vicariance biogeography, and niche construction are examples of other evolutionary mechanisms explaining the observable diversity of life.[20][21] Evolution leads to the following additional claims:
1.Differences in trait composition between isolated populations over many generations may result in the origin of new species.
2.All living organisms alive today have descended from a common ancestor (or ancestral gene pool).
Definition: Biological evolution, simply put, is descent with modification. This definition encompasses small-scale evolution (changes in gene frequency in a population from one generation to the next) and large-scale evolution (the descent of different species from a common ancestor over many generations). Evolution helps us to understand the history of life.
Definition:
(1) The change in genetic composition of a population over successive generations, which may be caused by natural selection, inbreeding, hybridization, or mutation.
(2) The sequence of events depicting the evolutionary development of a species or of a group of related organisms; phylogeny.
Originally posted by dplum517
reply to post by Quadrivium
This is why it is still called the Theory of Evolution.
In everyday usage, "theory" often refers to a hunch or a speculation. When people say, "I have a theory about why that happened," they are often drawing a conclusion based on fragmentary or inconclusive evidence.
The formal scientific definition of theory is quite different from the everyday meaning of the word. It refers to a comprehensive explanation of some aspect of nature that is supported by a vast body of evidence.
A scientific theory is "a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment."[1][2] Scientists create scientific theories from hypotheses that have been corroborated through the scientific method, then gather evidence to test their accuracy. As with all forms of scientific knowledge, scientific theories are inductive in nature and do not make apodictic propositions; instead, they aim for predictive and explanatory force.[3][4]
Originally posted by solomons path
Willfully ignorant or too lazy to use google?
Evolution is generally defined as changes in trait or gene frequency in a population of organisms from one generation to the next. This has been dubbed the standard genetic definition of evolution. However, the standard definition of an indivisible gene "as beads on DNA strings" has proven elusive, having no clear beginning nor end, and RNA is now seen as an important part of the heritable or transcribable information package. Evolution covers a much broader scale of study than the competitive fitness of genes, including theories on variation, form, function, adaptation, and how observable patterns at various levels of biological organisation fit into history of the Earth. Evolutionary theory explains macroevolutionary phenomena, such as species formation and divergence, to microevolutionary processes within individual organisms, cells, and biomolecules such as chromosomes, DNA, RNA, and proteins.[16][17][18]
Evolution originally referred to the unfolding of life, but it has since come to generally refer to Darwin's lasting theories on natural selection and principles on variation. Natural selection is only one of several mechanisms in the theory of evolutionary change that famously explains how organisms historically adapt to changing environments. The principles of heredity were re-discovered in 1900, after Darwin's death, in Gregor Mendel's research on the inheritance of simple trait variations in peas.[19] Subsequent work into genetics, mutation, paleontology, and developmental biology expanded the applicability and scope of Darwin's original theory. Evolutionary biologists constantly apply their theories in experimental research on the heritable characteristics of individuals that interact and reproduce to form lineages of biological populations. Genetic drift, gene flow, vicariance biogeography, and niche construction are examples of other evolutionary mechanisms explaining the observable diversity of life.[20][21] Evolution leads to the following additional claims:
1.Differences in trait composition between isolated populations over many generations may result in the origin of new species.
2.All living organisms alive today have descended from a common ancestor (or ancestral gene pool).
Definition of Evolution
Accordingly, evolutionary biologists suggest that the spcientific method reveals truths about "real nature" that is separate from our thoughts on the matter. [3][7][8][9] That all forms of life on Earth are related by common descent
evolution [ˌiːvəˈluːʃən] n
1. (Life Sciences & Allied Applications / Biology) Biology a gradual change in the characteristics of a population of animals or plants over successive generations: accounts for the origin of existing species from ancestors unlike them See also natural selection
2. a gradual development, esp to a more complex form the evolution of modern art
3. (Chemistry) the act of throwing off, as heat, gas, vapour, etc.
4. a pattern formed by a series of movements or something similar
5. (Mathematics) an algebraic operation in which the root of a number, expression, etc., is extracted Compare involution [6]
6. (Military) Military an exercise carried out in accordance with a set procedure or plan [from Latin ēvolūtiō an unrolling, from ēvolvere to EVOLVE] evolutionary , evolutional adj
You will notice that is says nothing of beginning of life.
You can feel free to pick up a text book and read it cover to cover, if you need any clarification about Evolutionary Theory.
Originally posted by solomons path
Here's more examples of this:
Definition: Biological evolution, simply put, is descent with modification. This definition encompasses small-scale evolution (changes in gene frequency in a population from one generation to the next) and large-scale evolution (the descent of different species from a common ancestor over many generations). Evolution helps us to understand the history of life.
UC Berkeley: Evolution 101
Definition:
(1) The change in genetic composition of a population over successive generations, which may be caused by natural selection, inbreeding, hybridization, or mutation.
(2) The sequence of events depicting the evolutionary development of a species or of a group of related organisms; phylogeny.
Biology online
These all say pretty much the same thing and I don't see anything about how life started
Willfully ignorant
Why?
Originally posted by dplum517
I definitely think Macroevolution and Microevolution need to be distinguished when discussing this topic.
They are qualitatively identical.
Macroevolution can be seen as the sum of long periods of microevolution, and thus the two are qualitatively identical while being quantitatively different.
are you serious.
That's what evolutionary theory is saying. Ask any biologist and they will tell you the same. Thereis no deviationin definition. It's the anti-evolution crowd that claims it means origin oflife. I'm assuming to rally support of the followers behind religious propaganda.
Originally posted by Arbitrageur
Great replies in this thread to a poorly formulated argument in the OP that confuses abiogenesis and evolution. I don't have much to add to that. But this point can be addressed:
Why?
Originally posted by dplum517
I definitely think Macroevolution and Microevolution need to be distinguished when discussing this topic.
Here's the distinction:
Microevolution
They are qualitatively identical.
Macroevolution can be seen as the sum of long periods of microevolution, and thus the two are qualitatively identical while being quantitatively different.
It's like the distinction between "micro-aging" and "macro-aging", you can see a little difference in your appearance over a short period of time, and a lot of difference over a longer period of time. It's still aging, just a different quantity of it, and so it is with different quantities of evolution. Just because you only see a small difference in your appearance over a year, doesn't mean those annual differences won't add up after many decades. Likewise, small evolutionary changes add up to larger changes over a long enough period of time. It's not such a profound distinctionl but when people say it is, I usually suspect they have a non-scientific agenda.