Oct 17, · Darwin’s theory of evolution by natural selection is a species adaptation to its environment and the environment’s impact to the species over time. Traits that benefit the survival of the species within a specific environment pass to offspring because members of the population that have the beneficial traits are more likely to survive and reproduce A discussion of Charles Darwin's Theory of Evolution and how it has overcome the trials and tribulations of time. the theory of evolution. In Europe in the late nineteenth century things were just as they are in today's society, in the sense that the elder generations still held a large amount of influence over the heads of the younger generations Social Darwinism essay shows that the evolutionary theory of Darwin is a holistic doctrine of the historical development of the organic world. It covers a wide range of problems most important of that are evidence of evolution, an identification the driving forces of evolution, a determination of the ways and regularities of an evolutionary process
Charles Darwin and Evolution Essay Example | GraduateWay
Few books have caused such turmoil as the Origin of Species by Charles Darwin. It was originally published incharles darwin theory of evolution essay, under the title, on the origin of species by means of natural selection or, The Preservation of favored races in the struggle for life Darwin The whole book and theory, if broken down into simplistic terms, just says that all living things developed down from a single ancestor and complex things developed from simple things. Along with Darwin, charles darwin theory of evolution essay, his close associate, Alfred Charles darwin theory of evolution essay is also given credit for the theory 1. While traveling aboard the HMS Beagle for charles darwin theory of evolution essay two years, he observed the fossils in South America, the Ostriches of the pampas and the finches in the Galapagos Islands that triggered charles darwin theory of evolution essay research, leading to the proposition of the theory of Natural Selection 2.
Darwin and Wallace based their assumptions on seven basic factors that proved the existence of natural selection. These are Geology, Fossils, Island life, Overproduction of individuals, extensive variation seen in individuals, these variations were inheritable and effects of artificial selection. It was found that geological procedures have been consistent throughout time. These showed that earth was considerably old. A glance at the present is enough to see the dynamics that shaped the past. Even slight changes that go on for a long period of time could have a large-scale impact, in Biology.
Even though extinct, certain forms show a distant connection with the ones living, charles darwin theory of evolution essay. It implied a thread of evolution running through both. While studying Galapagos Islands, it was found that the species within the islands were slightly different from the counterparts in the mainland. This led to the conclusion that the species that live in islands evolve in isolation and thereby evolved slightly differently. According to Malthus, it was found that species reproduced exponentially. Even though offspring abounded, most of them did not reach maturity. This indicated a process of selection going on which decided the members to reach maturity charles darwin theory of evolution essay reproduce. They also found that there were considerable variations within the individuals of a species.
Charles darwin theory of evolution essay being taxonomists, they found that even the wild species were not an exemption. These differences were also innate. Even physiological traits, textures and body shape, vulnerability to certain types of diseases etc. While examining the methods of artificial breeding and its effect on the domestic animals, it was found that some variations were favored and others were disfavored. Others were neutral even. These observed facts guided Darwin towards the theory of Evolution and the principle of Natural Selection.
The Theory indicates that if a population of a particular species developed a functional advantage, like learning to fly, the progeny of the particular individual species would inherit the advantage and consecutively all the oncoming generations. The inferior ones that remain behind would gradually die out. Natural selection means that the functional advantage of any particular species would be preserved and the remaining inferior members of the species would die out, leaving only the superior ones 3. This is like domestic breeding where only the superior quality of a species is allowed to breed, leaving out the inferior ones.
Natural selection singles out and discards the inferior members of a breed over time. This meant that only those that are fittest would survive. Darwin also wrote that these changes could not take place in giant leaps. It would take place only in slow and sure steps, charles darwin theory of evolution essay. Thus if any species contained a complex organ which could not have been formed by numerous, slow, and successive steps, his theory would absolutely break down. Such changes also could not take place to individual members of a population. It would happen to the whole population over periods of time 3. He states that the whole species must have developed from a common ancestor, which was the simplest organism and from an event that took place by random chance first form of life dawned on earth.
It is the development from simple to complex 5. While thinking about the process of natural selection, three basic things have to be kept in mind. Often while considering the evolutionary chain, charles darwin theory of evolution essay, only the evolution between organic creatures is considered. If we expand this universally and try to indicate the universal evolution cycle into this, we could divide the whole into seven evolutionary stages. But even though evolution is not observable directly, there are evidences which prove the theory to be true. First, we have to consider fossil evidence.
While arranging fossils chronologically, we are able to notice a gradual change in the structure and formation of characteristic limbs of several species. Horses are a species, which shows a very evident evolutionary trait. Next comes the proof that Natural selection can evidently produce evolutionary change. Artificial studies are indicative that evolution favors natural selection. When researching, we find evidences pointing to natural selection in other fields of Biology, like: The Anatomical record where often common share ancestry for organisms is found. The Molecular record indicates that the genes of organisms shown to be closely related by fossil records are also more similar than the ones distantly related 8.
Evidence also indicates that there are body parts that have been found to be remnants of our evolutionary past like the appendix, the tonsils etc. These body parts have been found to have no evident function at all within the body but they still existed 9. Now when the world has moved on to the next era after the publication of the book, it still holds its relevance and its fight against its critics. The theory has raised many controversies. Even though the concept of evolution was nothing new to the world of science, and many scientists preferred this to the concept of creation, they were not able to give an explanation to the process of evolution. Charles Darwin gave a grip to such, by his theory of natural selection, explaining how evolution was spearheading forward.
Well debated throughout the centuries, and often misinterpreted by many like Hitler, Darwin and his theory is still going ahead, strong even after years. Charles Darwin viewed evolution as an constant struggle to bring out the fitter species. That every species fights for life, is a fact accepted by everyone. However, they do not go further to state that it does not prove evolution There have been many significant evolutionists in modern times who have revised the Darwinian theory of evolution. Under the light of modern inventions and developments in molecular science, the Darwinian science of evolution is now taking flight with new wings adapted for the horizon Principles of Evolution. Darwins theory of evolution- A theory in crisis. Evidence for evolution-Controversial data, charles darwin theory of evolution essay.
Theory of Evolution. Thomas Huxley. These photographs show color variants of the peppered moth, Biston betularia. Tutt proposed that the dark moth is more visible to predators on unpolluted trees while the light moth is more visible to predators on bark blackened by industrial pollution. Table of Contents. The Theory and its Implications. We need to know that only heritable variations are amplified or diminished. This is because of the fact that genes control these variations. Evolution happens because of the ability of genes to mutate. Genes are actually chemicals that contain coded information in the form of DNA. Though gene mutations are random, charles darwin theory of evolution essay selection happens involving other factors.
The whole population of a species gets involved in the process of Natural Selection. This means that it does not happen to one or two individuals of a species, it happens to the whole community, in the context of whole populations. This process of natural selection depends on the environment. When the environment is friendly to a particular aspect of the species, the members not comfortable with the aspect tend to end up in lesser numbers. If the environment alters, the species could return to its charles darwin theory of evolution essay ratio of existence. The variations, found because of natural selection, charles darwin theory of evolution essay, if favored by the environment, give rise to phenotypes.
A little of the variations may turn into adaptations. There are genetic reasons for variations to become adaptations and adaptations are a result of Natural selection 6. Of these scientists say that only the last evolution may be observed and the others are just assumptions 7. There is no solid ground for the theory. We are not certain about the facts given in the books and in science theory means the basis on which we can rely on. This argument has even lost ground because even the theory gravity is just a theory. Another thing pointed out during the time, was that the absence of the fossil intermediaries.
But this argument has lost ground in recent times because the absent fossils have been dug up. Even this argument has broken up because intermediate eyes have been dug up. These intermediaries arose for the reason that they discovered light, and it was better than not being able to identify it at all. Next argument is that the order of things is usually lost by the occurrence of random events as stated in the second law of thermodynamics. However, the Complete law stated is that for a closed system and the earth, which receives energy continually from the sun, charles darwin theory of evolution essay, is not a closed system at all.
The formation of proteins by chance is a technical improbability, say the opponents of Darwin. But this too was proved wrong in that probability theory cannot be used to argue backwards. Another case is that Natural selection does not entail evolution. We cannot find a fish developing wings and leaping away from predators in any of the experiments that have been conducted. But biologists argue that even in the case of lab experiments with dogs, breeds that cannot interbreed have been produced. This is also the case with evolution.
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Apr 23, · Charles Darwin is regarded as the father of revolutionary biology as he introduced the evolution theory that describes the origin of species. Darwins scientific theory argues that populations develop over time through the natural selection process. His works proved that diversity of life arises through common descent evolution pattern Oct 03, · In , Charles Darwin published his theory to explain the origin of life in the entire human, animal and the plant species in a book he called, “The origin of species” (Freeman 28). His paradigm of natural selection depicts that life Nov 13, · experts online. Evolution, or at least most interpretations, is Evolution through Natural Selection. Which means that a species changes over a long period of time, or evolves, in order to have a better chance at surviving. The year is , and a failing biologist named Charles Darwin sets foot on a boat, not as a collector, but a gentleman
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