The contribution of a genotype or phenotype to the composition of subsequent generations, relative to the contribution of other genotypes or phenotypes. (See inclusive fitness.)
The genetic contribution of an individual to succeeding generations relative to the contributions of other individuals in the population. fixed action pattern A highly stereotypical behavior that is innate and must be carried to completion once initiated. flaccid( flas-id) Limp; walled cells are flaccid in isotonic surroundings, where there is no tendency for water to enter.
The contribution made to a population of descendants by an individual relative to the contribution made by others in its present population. The relative contribution that an individual makes to the gene pool of the next generation.
Lifetime reproductive success of an individual (i.e., the total number of offspring who themselves survive to reproduce). It can be seen as the extent to which an individual successfully passes on its genes to the next generation. It has two components: survival (viability) and reproductive success (fecundity). Variation in fitness is the major driving force in biological evolution.
Features of an organism that adapt it to survive and reproduce in the environment.
In animals fitness is measured by reproductive success, by the number of offspring that live to breed in their turn.
Ability of a prospective adoptive parent to provide for the best interests of a child.
Fitness is the measure of quality that agents collectively give a design. Higher fitness means greater liklihood of having more offspring. So traits that the agents favor are selected for.
Degree of adjustment and suitability for a particular environment. Genetic fitness is relative contribution of one genetically distinct organism to the next generation; organisms with high genetic fitness are naturally selected and become prevalent in a population.
The relative ability of an individual (or population) to survive and reproduce (pass on its genes to the next generation) in a given environment.
Probability that an animal of a particular genotype and phenotype will reproduce; in game theory models used to judge the success of a strategy (commonly denoted as (w) or EI(J) = expected pay-off to I when playing against J); see also Inclusive Fitness, Direct Fitness, Indirect Fitness
The average reproductive output of a class of genetic variants in a gene pool.
a measure of the number of genes passed on to the next generation relative to other genetic contributions; individuals maximize their fitness by having as many offspring as possible that live to reproduce (and contribute their genes to the next generation)
A measure of an object's ability to reproduce viable offspring.
The ability of an organism to survive and flourish in its current environmental conditions, relative to the other creatures also there. A measure of 'quality of life'.
The ability to survive to reproductive age and produce viable offspring. Fitness also describes the frequency distribution of reproductive success for a population of sexually mature adults.
Factor describing the difference in reproductive success of one individual or genotype relative to another.
In evolutionary theory, an individual's reproductive success.
The reproduction success of individuals of a particular genotype relative to the most fit genotype.
The success of an individual (or allele or genotype in a population) in surviving and reproducing, measured by that individual's (or allele's or genotype's) genetic contribution to the next generation and subsequent generations.
A unit-less measurement of the replication ability of a particular creature in a specified environment. By itself, fitness has little intrinsic meaning, but when compared to that of another creature it gives a ratio of their respective replication rates. Specifically, to calculate fitness, we take a creature's merit and divide it by its gestation time. (fitness = /tg). Since merit increases exponentially with the number of tasks acquired, fitness is best described by the log of its actual value (see also Inferiority).
A measure of an individual's ability to survive and reproduce; the chance that an individual will leave more offspring in the next generation than other individuals.
(1) The ability of an individual and its corresponding phenotype and genotype to contribute offspring to the next generation. (2) The number of offspring an individual produces, not just its ability to be selected.
The relative ability of an individual to survive and produce offspring.
the genetic contribution of an individual to the next generation.
The relative ability of an individual to survive and transmit its genes to the gene pool of the next generation.
The relative ability of an individual (or population) to survive and reproduce in a given environment. The 'fit' of an organism to its environment.
The ability of an organism or allele to survive and reproduce.
The fitness of an individual is measured by the proportional contribution of the individual's alleles that the individual makes to future generations
Property of being adapted or suited to an end or purpose; adapted to the environment so as to be capable of surviving; a measure of the ability of an organism to survive and reproduce in a particular environment. Fitness is measured in terms of the numbers of descendants left by an individual in succeeding generations; it incorporates measures of fecundity and viability.
The average contribution of one allele or genotype to the next generation or to succeeding generations compared with that of other alleles or genotypes.
Measure of the relative survival and reproductive success of a given individual or characteristic compared to others.
The number of offspring who reach reproductive age.
The success of an organism, relative to other members of its population, in passing on its genes to offspring. Fitness is a relative concept only; some organisms are better than others at passing on their genes in a given environment at a given point in time.
The ability of an individual to survive and reproduce relative to conspecifics.
The ability of an organism to survive and reproduce; the ability of an organism to pass its genes to the next generation. ()
Fitness (often denoted w in population genetics models) is a central concept in evolutionary theory. It describes the capability of an individual of certain genotype to reproduce, and usually is equal to the proportion of the individual's genes in all the genes of the next generation. If differences in individual genotypes affect fitness, then the frequencies of the genotypes will change over generations; the genotypes with higher fitness become more common.
In optimisation techniques an objective measure is how good the solutions it finds are, e.g. a way of building a bridge across the M4 will cost 400,000. In genetic algorithms and genetic programming, by analogy with natural selection this is called fitness. Fitness is used to guide the search by deciding which individuals will be used as future points to look for better solutions.