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W3 Assignment 1 Discussion

710 words - 3 pages

Darwin was not the first to consider evolution as a process but he did come up with the first effective explanation for how it happens. Describe Darwin’s theory of evolution by natural selection.
Darwin was not the first to consider the evolution process and came up with the first effective explanation for how it happens. Darwin's theory of evolution changed scientific thought by which he called it “natural selection.” This came about because he began to question prior ideas about the natural world. Natural selection is the “process by which random evolutionary changes are selected for by nature in a consistent, orderly, non-random way” (What is Natural Selection?, 2013). It is a process that occurs from generation to generation (heritable) and that many factors in nature have an effect on. Nature can be a dangerous place to live. Nature is capable of selection. Perhaps not direct control or selection but instead the indirect selection of nature. For example some of those factors in nature can be germs (because they kill), animals (they can eat you), die of heat exhaustion and or exposure to the cold. Over generations, creatures can become more and more suited for survival in their specific environments by natural selection. The process of descent with modification comes into play because it is where the new traits are randomly produced being that nature decides which new traits to keep. Positive changes happen over time and multiple generations (Evolution and Natural Selection, 2010).

Explain how this theory was a major advance over prior ideas as to how organisms changed over time.
Evolutionary ideas were proposed and debated long before Darwin come along. Darwin did not discover evolution but rather proposed the mechanism, the mechanism that brought about evolutionary change or natural selection (Pre-Darwinian Evolutionary Thought, 2009). Most people in that era (1800’s) believed that most species were created at the same time and remained unchanged. They also believed that the earth was only 6000 years old. Darwin’s ideas revolutionized biology, as we know it.
Give evidence in support of evolution and describe the driving forces for evolutionary change.
There are four types of evidence to support...

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