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Charles Darwin's Theory Of Evolution And Isolation Of Biological Species

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Every organism evolves over time. Whether it is because of an innate drive for perfection, or because of natural selection, evolution is taking place. Although evolution was not really studied or acknowledge until Charles Darwin came up with his Theory of Evolution, humans have been researching and analyzing it over years. This can be seen with the way humans have singlehandedly caused wolves to evolve into modern, domesticated dogs. This is a type of speciation of a biological species that still take place today.
Biological species are members of populations that can breed together. Many organisms that seem alike are actually a part of a different species. For example, different types of birds are not able to reproduce with one another despite looking almost completely identical. Also, organisms that look different from one another may be a part of the same species. For instance, ants look different from one another, but they still belong to the same species. …show more content…

First, there must be the isolation of populations of organisms. This is because in order for the populations to diverge from each other, then there has to be little gene flow between them. If there was a large amount of gene flow between the populations, then any changes that would appear in one population would start to appear in the other. Second, there must be genetic divergence. Although populations can be isolated from one another that does not necessarily mean that during that time period they will become two different species. If those two populations were to be reunited with each other, they would still be able to reproduce with one another. The genetic differences between the populations would have to be so great that they cannot properly breed with one another and produce fertile offspring; this is when they have become separate species, and speciation has

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