Introduction
Charles Darwin lived between 1809 and 1882. He was an English geologist and naturalist. He is recognized for the evolution theory that he has established. Darwin brought the idea that all organisms originated from a common ancestor. He believed that evolution came from natural selection as organism struggle to exist. Darwin believed that only the fittest organism is able to survive, and their genes are moved to the next generation. The theory of natural selection was formulated by Charles Darwin in the 19th century. Darwin was an English geologist, biologist and naturalist. Darwin started his investigation on species on the islands using vessel HMS Beagle. He spent time on the islands and came up with a theory that contradicted the creation theory. Darwin concluded that all species originated form a common ancestor, through natural selection process. Natural selection is the largest factor that resulted to the diversity of species as well as their genomes.
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Darwins Theory of Natural Selection
Darwins theory is traced back to the time of Aristotle. Darwin pointed out that he borrowed some ideas from the works of Aristotle and other Greek Thinkers such as Empedocles. Darwin pointed out that he could not have discovered how evolution took place without the work of Robert Thomas Malthus who made him realize that organisms adjust as they try to fit in the competition for scarce resources.
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. Darwin gathered information for his theory in the 1830s on the Beagle voyage. He also conducted subsequent experimentation, correspondence and research that proved his theory.
Explanation of Natural Selection
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. Darwin gathered information for his theory in the 1830s on the Beagle voyage. He also conducted subsequent experimentation, correspondence and research that proved his theory.
All species have an aim of reproducing to survive. They pass genetic information from one generation to another. Through reproduction, species produce more offspring such that the environment cannot handle it. As a result of increased reproduction, the population increases. The species living in a particular environment start competing for the scarce resources. Some of the offspring cannot survive because the competition becomes tougher and tougher as the amount of competitors increases.
Survival for the Fittest
As a result of the competition, some of the organisms die, leaving the tough ones to survive. Organisms that are best fitted for the environment mange to survive. When the environment provides such complicated conditions, some of the animals still manage to survive while some perish. Darwin believed that evolution came from natural selection as organisms struggle to exist. He pointed out that only the fittest organisms are able to survive, and their genes are moved to the next generation
Organisms that manage to survive the tough environment develop desirable characteristics that allow them survive in such environment. They have a suitable genome that makes them adjust to the environment by attaining suitable characteristics for the environment. The organisms pass the desirable characteristics to their offspring through their genes. A new species is created through evolution as organisms try to adjust to the environment.
According to Darwin, the evolved organisms start living in an ecological niche that favours their survival. These organisms continue passing adjusted features to their offspring in order to increase chance of survival. When the population of the organisms living in a particular ecological niche increases beyond what the environment can handle, the theory of natural selection continues acting. An organism that cannot survive in the harsh environment dies because of the competition for the scarce resources. This leaves the survivors with adjustment as the only option. They develop suitable characteristics that make them survive in the environment. They pass their adjusted features to their offspring, giving a rise to new species.
Impact of Natural Selection Theory
Most scientists are convinced that Darwin was the greatest scientist who had the revolutionised ideas. He managed to convince scientists that evolution originated form descent modification. His theory has been used to develop scientific drugs, genetically modified organisms and pesticides among other biological elements. His evolutionary synthesis has been incorporated with Madelia genetics, population genetics and natural selection ideas to evolve the world. It is Darwins ideas that reference modern scientific theories.
Conclusion
Darwin is the founder of evolution theory that shows how organism evolved. He explained how evolution occurred through natural selection. He did a lot of researches that resulted to a conclusion that all organisms originated from a similar ancestor. He believed that competition for the use of scarce resources such as food makes animals to adjust so that they can defeat the others. Only those that fit the best win the race. This adjustment is caused by natural selection, leading to evolution. New species arise from the adjusted parents with inheritable variations.
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