Evolution: Difference between revisions
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=== Causes of evolution are mutation, migration, genetic drift and natural selection.<br> | === Causes of evolution are mutation, migration, genetic drift and natural selection.<br> === | ||
'''Mutation''' | |||
A mutation is a random and spontaneous change in DNA, which can prove to be of benefit, detriment or to have no effect on the organism in which it occurs. | |||
=== References === | === References === | ||
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Revision as of 21:40, 15 November 2016
"Nothing in biology makes sense except in the light of evolution." - Theodosius Dobzhansky.
The word evolution has has been defined as "the gradual developing of something" [1].
Some argue that evolution is strictly the change over time, in genes and proteins, that occur in a population which allow an organism to be advantageous in it's surrounding environment. Organisms change continuously over time due to random mutations; however, the aforementioned definition incorporates that these changes - the evolution of a certain organism, must be beneficial in terms of it's environment.
Evolutionary changes in metabolism, development and behaviour created three domains[2][3][4]
Causes of evolution are mutation, migration, genetic drift and natural selection.
Mutation
A mutation is a random and spontaneous change in DNA, which can prove to be of benefit, detriment or to have no effect on the organism in which it occurs.
References
- ↑ http://oxforddictionaries.com/definition/evolution
- ↑ Hartl, D.L. and Ruvolo, M. (2011) 'Genetics: Analysis of Genes and Genomes.' 8th edn. Burlington: Jones &amp;amp;amp;amp;amp;amp;amp;amp;amp; Bartlett Learning.
- ↑ University of California Museum of Paleontology. (). Mechanisms of Change. Available: http://www.evolution.berkeley.edu.
- ↑ Bruce Alberts, Alexander Johnson, Julian Lewis, Martin Raff, Keith Roberts, Peter Walter. (2008) Molecular Biology of the Cell, 5th edition, New York: Garland Science