Dictionary » P » Physiological adaptation

Physiological adaptation

Definition

noun

(1) An organismic or systemic response of an individual to a specific external stimulus in order to maintain homeostasis.

(2) A metabolic or physiologic adjustment within the cell, or tissues, of an organism in response to an environmental stimulus resulting in the improved ability of that organism to cope with its changing environment.


Supplement

Unlike evolutionary adaptation which involves transgenerational adjustment, physiological adaptation is generally narrow in scope and involves response of an individual to a particular, usually narrow, range of stimuli. Examples of physiological adaptation are tanning of skin when exposed to sun over long periods, the formation of callouses on hands in response to repeated contact or pressure, and the ability of certain organisms to absorb nutrients under low oxygen tensions.


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Re: Theories - Origin of Life

... is regulated has yet to be resolved, these findings suggest that the physiological capabilities and adaptation of very divergent bacteria rely on a common set of universally distributed regulatory ...

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by scottie
Tue Jan 17, 2012 11:04 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 560
Views: 893182

Re:

... suggests that genes is not the only decisive factor on the phenotype,physiological factor, is another important one. Phenotypic changes are not ... study shows that the length of life is itself a good indication of adaptation, which indicates the viability of life in the environment.It is ...

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by robsabba
Tue Dec 01, 2009 4:15 pm
 
Forum: Evolution
Topic: About Physiological Darwinism:From Fitness to Optimality
Replies: 13
Views: 16947

About Physiological Darwinism:From Fitness to Optimality

... the phenotype, or not? Is the reproductive success the only criteria of adaptation, or not? First of all, the deep-structure theory suggests that genes is not the only decisive factor on the phenotype,physiological factor, is another important one. Phenotypic changes are not only ...

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by wellalt
Thu Nov 26, 2009 4:19 pm
 
Forum: Evolution
Topic: About Physiological Darwinism:From Fitness to Optimality
Replies: 13
Views: 16947

Re: About Physiological Darwinism:From Fitness to Optimality

... abandon their procreation, or to reduce the amount of their offspring , or to make their offspring smaller in body. This regulation is the best adaptation in this environment. I don’t think this regulation is not optimal because of their reduceing the reproductive success rate. This is a strategy ...

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by robsabba
Mon Nov 23, 2009 3:31 pm
 
Forum: Evolution
Topic: About Physiological Darwinism:From Fitness to Optimality
Replies: 13
Views: 16947

Re: About Physiological Darwinism:From Fitness to Optimality

... or to make their offspring smaller in body. This regulation is the best adaptation in this environment. I don’t think this regulation is not optimal ... lifetime can actively make multiform responses (in the broad sense of physiological phenotype) to the changeful environmental signals” provide ...

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by wellalt
Thu Nov 19, 2009 1:45 pm
 
Forum: Evolution
Topic: About Physiological Darwinism:From Fitness to Optimality
Replies: 13
Views: 16947
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