The Origin Of Species By Charles Darwin Essay

1316 Words Dec 15th, 2016 6 Pages
One of the most heavily debated topics of all time is evolution. However, if evolution were not at work then there would be a loss as to one of the ways that we understand how we all came to be. “Evolution is the change in allele frequencies of a population, which over time produces a population with new or modified characteristics. (Evolution: The Big Picture)” Evolution can be achieved through four different methods: mutation, genetic drift, migration, and natural selection. Out of the four methods, natural selection is most important. Charles Darwin describes natural selection in his book “The Origin of Species”.
For natural selection to occur, there are three requirements that must be met for the desired outcome to be achieved. “The first condition necessary for evolution by natural selection is the presence of variation for a trait. A population must have individuals with different versions of a trait—for example, the different coat colors in mice, which are represented here by different colors on chromosomes. Second, the different versions of a trait must be heritable, meaning that the traits may be passed from parents to offspring. The third and final condition is that the different versions of a trait must result in differences in reproductive success for the individuals in the population. Individuals with the version of a trait most suited to reproduction in their environment generally leave more offspring than individuals with other versions of the trait.” (Natural…

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