Реферат: Charles Darwin Evolution Essay Research Paper Charles
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Charles Darwin: Evolution Essay, Research Paper
Charles Darwin proposed the theory of evolution to explain the origin,
diversity and complexity of life. I will will disprove evolution by
showing that natural selection only explains small evolutionary changes,
collectively known as microevolution. Natural selection cannot drive
large evolutionary changes, macroevolution. I will also show that the
primordial soup, in which life supposedly evolved, did not exist.
Neo-Darwinism incorporates the discoveries of modern science into
Darwin’s original theory while leaving the basic beliefs intact. Darwin
proposed that individuals with favorable traits are more likely to
survive and reproduce. Darwin called this process natural selection.
Darwin did not understand how or why variation existed. Today scientists
realize that variation arises through random changes (called mutations)
to existing genes. Genes are the chemicals that determine the traits and
characteristics of animals and plants. Every trait has one or more gene
associated with it. Thus, natural selection provides the animals and
plants with the best genes. Supporters of neo-Darwinism believe that
natural selection operating upon random variation gave rise rise to all
animals and plants. While the source of variation is random, the
direction of evolution is not. In effect, natural selection removes
chance, and it makes the theory of evolution plausible. If neo-Darwinism
is correct then numerous small successive changes guided by natural
selection gave rise to all animals and plants.
I will prove that natural selection is not a creative process. Its
primary function is to preserve the status quo. Thus, new structures and
organs must arise through chance. Natural selection can only preserve
and optimize these new structures and organs after they evolve through
chance. In other words, natural selection does not drive evolution, and
the hypothesis on which neo-Darwinism is based is flawed.
Natural selection drives microevolution. Microevolution is defined as
evolution involving small changes. Microevolution does not require the
evolution of new structures or organs, Therefore, microevolution does
not involve the creation of new genes.
Changes to existing genes (mutations) result in variation. Natural
selection acts on this variation and preserves the best. So while the
variation may be random, the process of microevolution is not.
Natural selection preserves favorable variations at the expense of less
favorable variations. This process optimizes existing genes.
Natural selection forces animals and plants to adapt. Microevolution
happens, and it has been observed in numerous scientific experiments.
The real question is not whether or not microevolution happens. It does,
but can microevolution be extended to explain large evolutionary
changes? Such changes require new genes.
Natural selection only optimizes existing genes: If a gene does not
exist, it cannot provide a selective advantage. Natural selection only
When an existing gene tries to evolve into a new gene, the evolving gene
must provide some selective advantage, before natural selection can
drive the transition. (The declaration of many evolutionists that
natural selection drives the transition every step of the way, implies
that the evolving gene must perform its new function before it evolves
into the new gene. This is like saying a bird with no wings can fly.)
Random chance not natural selection is responsible for the evolution of
new genes. Until an evolving gene offers some competitive advantage,
natural selection is out of the picture.
If evolution is not a viable theory, then why is it generally accepted
by modern science and why is it often taught as a proven fact in high
To answer this question, let us take a trip back in time to the late
1800’s. Darwin observed birds on the Galapagos islands over 100 years
ago, and the variation that he saw led him to the theory of evolution.
exactly did Darwin propose, and why was it accepted by scientists?
1) Variation exists within members of the same species.
2) Variation can be inherited. That is parents pass on their traits to
3) In nature, animals struggle to survive.
4) Natural selection is a direct consequence of the first three
observations. Darwin proposed that individuals with favorable traits are
more likely to survive and reproduce. In other words, nature selects
life with favorable characteristics and preserves it.
5) Darwin documented the small changes that can occur from one
generation to the next. He then proposed that through numerous,
successive, slight modifications, driven by natural selection, the
descendants of simple animals evolved into complex animals.
The first four observations are correct. The last one is flawed.
Darwin observed and documented examples of small evolutionary changes
(microevolution) and used these to explain large evolutionary changes
(macroevolution). While this was poor judgement on his part, the idea
has caught on. Modern science routinely sites examples of microevolution
as proof that macroevolution is possible.
A good example of extending microevolution to explain macroevolution is
the peppered moth. So what is a peppered moth? This moth lives in
England and it can either be black or speckled gray. During the
industrial revolution, the trees that the moth is rested on during the
day changed from lichen covered gray to soot colored black. The
population of gray moths which dominated before the industrial
revolution decreased as the population of the black moths increased. The
cause of this change was linked to predation by birds. Before the
revolution, the grey moths had a selective advantage because they
blended in with the grey lichen. Birds had a difficult time seeing these
After the revolution, the black moths had a selective advantage, because
the trees were now black. This is a great example of microevolution. But
can this experiment be extended to prove that macroevolution is
possible? No. The moth’s color variation is not an example of a new gene
evolving. It is an example of an existing gene being optimized in
response to a changing habitat. Darwin’s last observation should read
5) … through numerous, successive, slight modifications, driven by
natural selection, the descendants of animals continually adapt.
Through these adaptions lifE is optimized. These adaptions maximize
variation and can bring about significant change. Unfortunately, since
scientific experiments can not test macroevolution, there is no direct
evidence to suggest that the processes behind
microevolution can also bring about the evolution of new structures or
genes. In other words, microevolution should not be extended to support
While punctuated equilibria may save evolution from the fossil record,
it cannot save the theory from the more serious flaws. For example, the
success of evolution is based entirely upon the ability of scientists to
use microevolution to justify macroevolution.
What is the difference between microevolution and macroevolution?
Microevolution does not require new structures or organs. Macroevolution
does. This implies that microevolution does not create new genes whereas
Two things should be clear from the examples offered above:
1.) Microevolution can bring about very large changes.
2). It is easy to make the same mistake that Darwin made. That is
microevolution can accomplish a lot, so why not use it to explain
For these reasons explained above, how can any person with a sound mind
still believe in the outlandish fairytale that is called evolution?
Название: Charles Darwin Evolution Essay Research Paper Charles
Раздел: Топики по английскому языку
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Реферат: Charles Darwin Evolution Essay Research Paper Charles
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