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Darwinian fitness

Definition

noun

(1) A biological condition in which a competing variant is increasing in frequency relative to other competing variants in a population.

(2) A relative measure of reproductive success of an organism in passing its genes to the next generation.


Supplement

In biology, Darwinian fitness or simply fitness of a biological trait describes how successful an organism has been at passing on its genes. The more likely that an individual is able to survive and live longer to reproduce, the higher is the fitness of that individual.

There are two ways through which fitness can be measured:


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Re:

... definition of favourable and unfavourable are highly relative in the darwinian theory, hence the existence of traits currently perceived as unfavourable ... plan that are much more likely to be detrimental than to increase your fitness. While backpain when you age as limited impact on our reproductive ...

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by biohazard
Wed Apr 22, 2009 3:33 pm
 
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16283

Natural selection is proven wrong

... definition of favourable and unfavourable are highly relative in the darwinian theory, hence the existence of traits currently perceived as unfavourable ... plan that are much more likely to be detrimental than to increase your fitness. While backpain when you age as limited impact on our reproductive ...

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by canalon
Wed Apr 22, 2009 2:32 pm
 
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16283

The Fiber Disease

... more than classical Darwinism; it requires the modern "neo-Darwinian" or "population genetics" understanding of evolution ... by selection pressures acting on genes. A given gene's contribution to fitness is determined by regularities of the total environment, including ...

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by Skytroll
Fri May 05, 2006 4:13 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 748664

The Fiber Disease

... will, most of the time, only adjust preexisting phenotypes. While fitness peaks may never be explored if they must be reached one gene at a ... needs more attention than it gets, because it challenges the strictly darwinian account of the source of new genetic programs. (What remaining ...

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by Skytroll
Thu May 04, 2006 4:52 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 748664

Who did we evolve from?

... accepted model of evolution. It's still essentially evolution, but not darwinian gradualism. It states that from time to time, animals will simply give birth to a new creature, and depending on the fitness of that creature it will live and start a new species or die. This has ...

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by AstusAleator
Tue Apr 25, 2006 12:57 am
 
Forum: Evolution
Topic: Who did we evolve from?
Replies: 157
Views: 19253


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