Natural selection: Difference between revisions
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Natural selection is a process were individuals better suited to their [[Environment|environment]] survive and pass on their traits to [[Offspring|offspring]], in turn making the trait more popular. | Natural selection is a process were individuals better suited to their [[Environment|environment]] survive and pass on their traits to [[Offspring|offspring]], in turn making the trait more popular. Natural selection is also one of the many processes by which [[Evolution|evolution]] occurs. | ||
In order for natural selection to take place there must be variation in [[Genotype|genotype]]. Varied genotypes produce varied physical characteristics, making individuals distinguishable ([[Phenotype|Phenotype]]) this means some organisms are better /or worse adapted to their environment. Organisms that are better suited to their environment have higher percentage chance of survival, for example; in the artic circle a hare with white fur genotype is less likely to be eaten by [[Predator|predators]], a hare with brown fur genotype is more likely to be visible to predators therefore more likely to be eaten. White hares are able to survive and reproduce passing on the white fur [[Allele|allele]] to offsping. As time passes frequency of the advantageous allele increases in population and the disadvantage allele falls<ref>University of California Museum of Paleontology. Natural selection. [cited 04/12/2016]. available from: http://evolution.berkeley.edu/evolibrary/article/evo_25</ref>. | |||
=== References === | === References === | ||
<references /> | <references /> | ||
Hartl DL, Ruvolo M. Genetics: analysis of genes and genomes, 8th Ed, Boston: Jones and Bartlett, 2012 | |||
Revision as of 18:49, 4 December 2016
Natural selection is a process were individuals better suited to their environment survive and pass on their traits to offspring, in turn making the trait more popular. Natural selection is also one of the many processes by which evolution occurs.
In order for natural selection to take place there must be variation in genotype. Varied genotypes produce varied physical characteristics, making individuals distinguishable (Phenotype) this means some organisms are better /or worse adapted to their environment. Organisms that are better suited to their environment have higher percentage chance of survival, for example; in the artic circle a hare with white fur genotype is less likely to be eaten by predators, a hare with brown fur genotype is more likely to be visible to predators therefore more likely to be eaten. White hares are able to survive and reproduce passing on the white fur allele to offsping. As time passes frequency of the advantageous allele increases in population and the disadvantage allele falls[1].
References
- ↑ University of California Museum of Paleontology. Natural selection. [cited 04/12/2016]. available from: http://evolution.berkeley.edu/evolibrary/article/evo_25
Hartl DL, Ruvolo M. Genetics: analysis of genes and genomes, 8th Ed, Boston: Jones and Bartlett, 2012