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Directional Selection

The process of natural selection involving the genome for a species directionally choosing certain genes to remain prominent in the species, such as a growth in size in response to predation.


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Theories - Origin of Life

... That is whole point of the combination of random mutations with directional selection: one fuels the variation on which the other acts. And steady mutation rates mean ...

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by Luxorien
Wed Sep 19, 2012 2:55 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755194

Re: Natural selection ends in absurdity or nonsense

There are many definition/s of natural selection: This is yours: natural selection, a process that causes helpful traits ... fitness are more likely to reproduce than individuals with lower fitness. The directional process of evolutionary change. Some genes or allelles become more common ...

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by Forests
Wed Jul 18, 2012 10:10 pm
 
Forum: Evolution
Topic: Natural selection ends in absurdity or nonsense
Replies: 26
Views: 17012

Re: Theories - Origin of Life

Jackbean scottie, you get obviously confused mutations and natural selections. Mutations ARE random, the selection is NOT . No, I am not confused. ... they will probably change in similar ways. The change is still directional, and will be in the same direction every generation.  1) The enviromental ...

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by scottie
Wed Feb 15, 2012 9:51 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755194

Re: Theories - Origin of Life

... in my last post which one is probably the most likely. Natural selection as we know, is the simple result of variation, differential reproduction, ... that they will probably change in similar ways. The change is still directional, and will be in the same direction every generation. Reproductive ...

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by AstraSequi
Tue Feb 14, 2012 5:37 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755194

Re: Theories - Origin of Life

... of all, one of Deamer's underlying premises seems to be that natural selection is goal-directional, through which life should move from simple to complex. I believe this is an error, ...

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by awkko808
Fri Dec 23, 2011 1:36 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755194
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