Equilibrium

equilibrium
in population genetics, the state at which the forces that tend to change gene frequencies are counterbalanced so that there is no net change in gene frequencies from one generation to the next ...
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Equilibrium (2002 film), a science fiction film
Equilibrium (band), a German viking metal band
"Equilibrium (DS9 episode)", an episode of Star Trek: Deep Space Nine ...
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A constant, characteristic for each chemical reaction; relates the specific concentrations of all reactants and products at equilibrium at a given temperature and pressure.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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Punctuated equilibrium, or punctuated equilibria, is a theory of evolution which states that changes such as speciation can occur relatively quickly, with long periods of little change—equilibria—in between.
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Equilibrium
The inner ear also detects:
the position of the body with respect to gravity
the motion of the body.
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equilibrium
[L. aequus, equal + libra, balance]
The state of a system in which no further net change is occurring; result of counterbalancing forward and backward processes.
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equilibrium community Also called a disclimax community; a community subject to periodic disruptions, usually by fire, that prevent it from reaching a climax stage.
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At equilibrium there should be a few alleles at intermediate frequency and many at very low frequencies. This is the Ewens- Watterson distribution. New alleles enter a population every generation, most remain at low frequency until they are lost.
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Linkage equilibrium
When the observed frequencies of haplotypes in a population agrees with haplotype frequencies predicted by multiplying the frequencies of individual genetic markers in each haplotype. Cf. linkage disequilibrium.
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chemical equilibrium The condition when the forward and reverse reaction rates are equal and the concentrations of the products remain constant.
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Linkage disequilibrium Where alleles occur together more often than can be accounted for by chance. Indicates that the two alleles are physically close on the DNA strand.
See also: Mendelian inheritance ...
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punctuated equilibrium -- A model of evolution in which change occurs in relatively rapid bursts, followed by longer periods of stasis.
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Hardy-Weinberg equilibrium (HWE)
: In an infinitely large population, gene and genotype frequencies remain stable as long as there is no selection, mutation, or migration. For a bi-allelic locus where the gene frequencies are p and q: p2+2pq+q2 = 1 ( ...
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partition coefficient A constant that expresses the ratio in which a given solute will be partitioned or distributed between two given immiscible liquids at equilibrium, or between a solvent and adsorbant.
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When the redox equilibrium of the cell is upset by pro-oxidant environmental stimuli, adaptive responses to the redox stress take place, which can result in up-regulation of antioxidant proteins and detoxification enzymes.
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It's very, very important to understand that there's a very important balance, a dynamic equilibrium between host, pathogen, the environment, factors that all together allow a very precise knife-edge balancing of all these factors.
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Homeostasis is the property of an open system to regulate its internal environment so as to maintain a stable condition, by means of multiple dynamic equilibrium adjustments controlled by interrelated regulation mechanisms.
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homeostasis - metabolic equilibrium actively maintained by several complex biological mechanisms that operate via the autonomic nervous system to offset disrupting changes
By Wordnet Dictionary ...
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homeostasis: the process in which the internal environment exists at a steady-state equilibrium despite changes in the external environment.
homeothermic: animals that can maintain a constant body temperature.
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A set of closely linked genetic markers present on one chromosome which tend to be inherited together (not easily separable by recombination). Some haplotypes may be in linkage disequilibrium.
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Punctuated equilibrium: the belief that evolution proceeds by spurts of change interspersed with long periods of stasis (genetic stability) where selection favors no change.
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