geccd.instructure.com thematics H Topic: 5.8 Evolution Board (Graded Assig. TH-1

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geccd.instructure.com thematics H Topic: 5.8 Evolution Board (Graded Assig. TH-130-0215 Discussons 5.8 Evolution Discussion Board (Graded Assignment) This is a graded discussion: 1 point possible due Mar 21 5.8 Evolution Discussion Board (Graded Assignment) Alberto Vigi In simplest terms, evolution can be defined as a change in allele frequency over time. A nature is that allele frequencies for any given gene are always in a state of flux and for that reason evolution is a fact of nature. At the same time we have theories that help us fact of explain why allele frequencies change in the frst place. We call these evolutionary theories and for this section we explored two of these theories.natural selection and genetic drift. The purpose of this discussion board is meant for you to share any ideas or to demystify any difficulties that you may have about evolutionary theory. Feel free to share your thoughts in an open ended but informed way! For your contribution you will receive participation points Unread Search entries or author 6 Reply Replies are only visible to those who have posted at least one reply Next . Previous 1 8 34 5 6 78

Explanation / Answer

Evolution is a fact since everything is changing and has changed a lot from the time it begun. There are many theories which lead to evolution of the allele and this helps in gradual changes. Natural selection and genetic drift are two different facts that show that there has been lot of evolution. The theory of evolution is based on the fact that gradually things change over time. Based on genetic variation, evolution takes place. Natural selection is an evolution mechanism which involves mutation and migration. Genetic Drift is an evolution mechanism where the allele frequency changes the population over from one generation to another.

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