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Natural Selection: Applying Darwin's Theory Of Evolution

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All creatures on Earth change relentlessly to adapt and survive in a new environment. Human beings are not an exception to this rule. Evolution by Hall and Hallgrimson had stated that Darwin’s theory of evolution is a change in genetic traits of biological population from one generation to another. The dominant, or adaptable genes will replace the recessive genes in the gene segment. The whole process of evolution, however, does not happen rapidly. It takes time, possibly one million year and beyond, depending on the species and living condition. So, what made all of the changes happen? Natural Selection. Darwin had used this mechanism of change over time to explain his theory of evolution. This definition paper will compare natural selection …show more content…

In addition, every animal is a link in the food chain. Losing one of these links could damage the harmony in nature, leading to the ecological imbalance. Nonetheless, artificial selection totally differs from natural selection. Artificial selection includes the involvement of human. Scientists and farmers breed plants or animals with desirable characteristics to produce new species, fulfilling human needs. Moreover, this idea of selection tends to occur in domestic population and produce the diversity of organisms which is different from native generations. According to Berkeley.edu, “due to fishing regulations dictating that only the largest fish may be kept, humans artificially select fish to produce smaller size fish. Originally there was great variation in fish size. As the population was fished, only large fish were removed, while smaller fish remained. Small fish reproduce and produce more small fish. Population will continue to decrease in size so long as the largest fish are harvested.” On the other hand, in natural selection, natural changes in the environment play an active role in the process. This takes a lot of time and produces a great biological

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