Dictionary » N » Natural selection

Natural selection



A process in nature in which organisms possessing certain genotypic characteristics that make them better adjusted to an environment tend to survive, reproduce, increase in number or frequency, and therefore, are able to transmit and perpetuate their essential genotypic qualities to succeeding generations.


It is the process by which heritable traits that increase an organism’s chances of survival and reproduction are favoured than less beneficial traits. Originally proposed by Charles Darwin, natural selection is the process that results in the evolution of organism.

See also:
theory of evolution, survival of the fittest.

Additional Reference

A more detailed discussion about the theory and of natural selection and examples of it in practice can be found in the genetics and evolution tutorial.

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Neo-Orthogenesis and Neo-Darwinian evolution

... like to state as clearly as possible that I completely accept Darwinian natural selection as an established scientific fact and a logical and beautiful explanation of the ...

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by valetudo
Tue Mar 11, 2014 11:12 am
Forum: Evolution
Topic: Neo-Orthogenesis and Neo-Darwinian evolution
Replies: 0
Views: 87

Re: Why do Africans have large noses and lips?

... very closely associated with another trait on the DNA strand. So when natural selection keeps trait A in the gene pool as advantageous, trait B is also preserved. Trait ...

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by anneland
Sun Mar 09, 2014 6:54 pm
Forum: Human Biology
Topic: Why do Africans have large noses and lips?
Replies: 30
Views: 186952

Please answer: Group selection and Sociobiology

... that Western culture could suppress local cultures, and it was just a natural process. The concept became politically very incorrect. Rejecting group selection means saying that, in colonial species, the interactions and subgroups within the ...

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by Darby
Tue Feb 25, 2014 5:48 pm
Forum: Human Biology
Topic: Please answer: Group selection and Sociobiology
Replies: 1
Views: 151

Is incest avoidance selected for?

... i know they are not the same thing, but in general, is it genetic? did natural selection select the genes that will create the avoidance behavior in organisms that reproduce ...

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by MadMax112
Tue Feb 18, 2014 8:52 pm
Forum: Evolution
Topic: Is incest avoidance selected for?
Replies: 2
Views: 279

how are genes the unit of replication?

... this correctly: I understand that genes are the unit of replication in natural selection. But aren't traits ultimately stored in groups of genes? And is it not traits that ...

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by johnkq
Wed Jan 29, 2014 1:58 pm
Forum: Genetics
Topic: how are genes the unit of replication?
Replies: 2
Views: 530
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