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Natural Selection Essay

803 Words4 Pages

Natural selection is the bases for understanding how species change overtime. It is the adaption of an organism to its environment in order to survive and reproduce. According to Darwin’s theory natural selection is “survival of the fittest” which means only the fastest, strongest and fittest among the group survives for example the strongest and fastest Panthera tigriss (tiger) in the region survives and the slow and weak Panthera tigriss suffers finding food. Natural selection is directly connected to evolution as evolution mainly takes place because of natural selection. When natural selection takes place mutation in species also take place and this causes evolution. There are four factors which are necessary for natural selection to take …show more content…

For example we find different types of elephants like African elephants, Asian elephants and many more types of elephants. These are all variations of elephants. The elephants living in Africa (Loxodonta africana) live in a different climate and environment than the elephants living in Asia (Elephas maximus) and this cause in variation in the appearance of the elephants. Increased variations of traits in a population actually increases the chances of survival as even if a part of the population is wiped out there are still some individuals with the same traits to continue the species by reproducing and …show more content…

The traits they have will be passed down to the next generation after reproduction and the species as a whole will become stronger as the individuals are not suitable for the climate will not reproduce. Therefore, there will only be strong individuals in the coming generation. More individuals will have the traits and will survive till the environmental conditions are beneficial to the individuals. For example a generation of Panthera tigriss has all the beneficial traits and they are passed down to the next generation but the climate is not suitable for the traits passed down then the generation will not survive. This is the purpose of Natural Selection. The tool for evolution and formation of new species is dependent upon these aspects to make it

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Natural selection is a force of nature that is a catalyst to forever changing variations in species of plants and animals. Pertaining to the article, "Darwin and Natural Selection" by Dr. Dennis O'Neil, the Galapagos Islands helped Darwin to understand the idea of evolution. Darwin identified thirteen different species of finches that differ from beak size and shape. The term used for this variation today is called adaptive radiation; where different populations of the same species develop different characteristics due to contrasting environments. Moreover, Darwin realized the beak varieties were apparent to the differing diets of each population of finches.

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Natural selection is organisms with traits that are best suited to their environment and are more likely to survive and reproduce. As stated in chapter 5 of Unraveling the Origins Controversy, “Natural selection is deemed the primary mechanism of non-random changes in the number of particular traits in a population” (David A. DeWitt, 2007). Some of the factors that limit natural selection are traits that are not heritable. Some examples are learned behaviors; diet induced traits, and behaviorally induced traits.

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Organisms can evolve to enhance their ability to catch prey, or flee predators. Coevolution occurs in a predator-prey relationship when the prey evolves in response to pressures exerted by its predator. The predator then evolves in response to the changes in the prey (or vice versa). Inheritable adaptive traits evolve through natural selection, the process by which organisms that have developed favorable traits are capable of surviving and reproducing at greater rates, thus passing their adaptive traits to their offspring. Birds and caterpillars have a predator-prey

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619 Words | 3 Pages

The survival and reproduction acts naturally in a certain population. For natural selection, polar bear takes as an example for it can adapt a certain environment. Polar bears have brown and white colored fur which lives differently for the code of their own survival. On the other hand, artificial selection has the selection of natural variations in a population wherein the survival and reproduction is driven

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1940 Words | 8 Pages

In nature, there are a variety of organisms within the same species who have better-suited adaptations to their environment while some do not. The finches that Darwin studied in the Galápagos Islands of Ecuador, for example, had different physical traits that suited them specifically for their environment, the resources that were available; consequently, the finches who do not have the necessary adaptations die off eventually, unable to reproduce a new generation. With additional research and studies, Darwin formalized this theory on the basis of evolution: “a Ratio of Increase so high as to lead to a Struggle for Life, and as a consequence to Natural Selection, entailing Divergence of Character and the Extinction of less-improved forms.” (Darwin XIV). When a certain species produces too much offspring, they will all fight for the same food or resource that may not be in an ample supply.

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394 Words | 2 Pages

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918 Words | 4 Pages

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557 Words | 3 Pages

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914 Words | 4 Pages

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1006 Words | 5 Pages

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