fitness

Viability

...a hindrance to the animal , thereby lowering its fitness . Full article >>> This paper describes the pharmacological approach to understand the molecular components of inflammation and oxidative stress on the activation of micro glial cells and neuron al cell viability . Full article &...

Trait

...e's reproductive years are over — increases fitness . Such trait s are adaptation s. Sexual Selection ... Full article >>> dominant trait A trait whose phenotype is determined by a single allele at a particular locus . dormant Having reduced metabolic and respiratory ac...

Survival

...best adapted to the environment . One measure of fitness . Environment ... Full article >>> Survival of the Prettiest: The Science of Beauty Nancy Etcoff; Paperback; Buy New: $11.20 43. Biology (Cliffs Quick Review) I. Edward Alcamo; Paperback; Buy New: $9.99 ... Full article >...

Seed

...order or randomness of a system. environment al fitness : an individual's ability to adapt to an environment and reproduce. Full article >>> sperm atos - seed , semen ; Gr. kytos - a hollow vessel; modern usage cyt- denotes a cell ]. An immature diploid germ cell found in the test...

Progeny

...ation ). Full article >>> Relative fitness is quantified as the average number of surviving progeny of a particular genotype compared with average number of surviving progeny of competing genotype s after a single generation, i.e. one genotype is normalized at w = 1 ... Full artic...

Probability

...ull article >>> : Class ic genetic fitness is the average direct reproductive success of an ...mparison to others in the population . Inclusive fitness is described as the class ic fitness plus the probability that an ... Full article >>...

Population genetics

... isms is sometimes depicted as if travelling on a fitness landscape. The arrows indicate the preferred flow of a population on the landscape, and the points A, B, and C are local optima. Full article >>> : In population genetics , the nonreciprocal inter action between nonallelic genes ...

Population

...dicates a population that moves from a very low fitness value to the top of a peak Enlarge ... Full article >>> The organ isms in a plant population and the biotic and abiotic factors which impact on them. Ecosystems can be narrowly defined or broadly defined (e.g. the basin big sag...

Pleiotropy

...ch are beneficial early in life (i.e., increasing fitness ) but deleterious later in life (no change in fitness after the reproductive age). Full article >>> GAs do not ignore polygeny and pleiot...

Outbreeding

outbreeding depression A reduction in the fitness of offspring resulting from mating s among individuals from different population s or demes, possibly caused by the breaking up of coadapted gene complexes. Full article >>> For example, including the complete genetic dynamics o...

Natural selection

...ype because of superior life history attributes ( fitness ) such as survival or fecundity . Phenotype ... Full article >>> natural selection The mechanism for evolution ary change in which environment al pressures cause certain genetic combinations in a population to become more ab...

Multiple alleles

...s at a locus differed in sequence , but their fitness es were the same. Kimura's neutral theory described rates of evolution and levels of polymorphism solely in terms of mutation and genetic drift . Full article >>> The S loci are (as in SSI plant s) extremely polymorphic; th...

Mating

...s that are closely related genetically. inclusive fitness ... Full article >>> Auto mating the Process If primer walking with hexamer strings proves to be reliable and efficient, the entire sequencing process could be automated. Full article >>> Post mating isolating mec...

Inbreeding

...s that are closely related genetically. inclusive fitness ... Full article >>> inbreeding depression In a small population , an accumulation of harmful genetic trait s (through random mutation s and natural selection ) that lowers viability and reproductive success of enough indivi...

Heterozygote

... model in which heterozygote s have the highest fitness . 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 ... Full article >>> Heterozygote cells are diploid or polyploid and have different alleles at a locus (position) on homologous chromosomes . Full article >>&#...

Fitness

...> SYN: adaptive value , relative Darwinian fitness The relative reproductive success of a genotype... or other life history parameters. See Darwinian fitness and natural selection . Full article >>> Fitness landscapes in evolution ary op...

Fecundity

...arge number of mature offspring is a measure of fitness . I stress mature because only they can pass these... or other life history parameters. See Darwinian fitness and natural selection . 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 ... Full article >...

Evolution

...ptation : a condition or character which afford fitness to a species in a particular environment . Adaptive radiation : evolution ary divergence of members of a single phyletic line into many different niche s. Full article >>> Evolution ary change on a grand scale , encompassing t...

Environment

.... Full article >>> environment al fitness : an individual's ability to adapt to an environment and reproduce. enzymes : proteins that catalyze the chemical reactions within cells . eosinophils : white blood cells whose functions are uncertain. Full article >>> Enviro...

Entropy

...order or randomness of a system. environment al fitness : an individual's ability to adapt to an environment and reproduce. enzymes : proteins that catalyze the chemical reactions within cells . Full article >>> entropy The degree of dis order in a system. As energy is trans ferre...

Endosperm

...order or randomness of a system. environment al fitness : an individual's ability to adapt to an environment and reproduce. Full article >>> endosperm A food storage tissue that provides nutrients to the developing embryo in angiosperm s; formed from the triploid cell produced wh...

Darwinian fitness

Darwinian fitness A measure of the relative contribution of an indi...ll ... Full article >>> Darwinian fitness The relative probability of survival and reproduction for a genotype . See fitness . Natur...

Consanguinity

... Inbreeding often leads to reduced health and fitness (called consanguinity depression, inbreeding depression ); however, livestock breed ers often practice inbreeding , then cull unfit offspring , ... Full article >>> When a population consists of an insufficient number of indiv...

Coding region

...ryukov GV, Schmidt S & Sunyaev S (2005) Small fitness effect of mutation s in highly conserved non- coding region s. Human Molecular Genetics 14:2221-9 ... Full article >>> But also, importantly, if you compare the genome of zebra fish to the genome of human for a particular ...

Altruism

...haviour in which an individual risks lowering its fitness for the benefit of another. Related Terms: Fitness ... Full article >>> Altruism : Helping others without direct benefit, and sometimes harm, to oneself. Amino acids ... Full article >>> altruism The principle o...

Alleles

...alleles of a gene do not differ with regard to fitness , on average the number of carrier s in one generation is proportional to the number of carrier s in the last. Full article >>> multiple alleles A condition in which more than two alleles exist for a given trait . multiple fis...

Adaptive value

...gan ism to survive and reproduce or lends greater fitness in its environment ; selective advantage. Full ...;> SYN: adaptive value , relative Darwinian fitness The relative reproductive success of a genotype as measured by survival ; fecundity or other l...

Adaptive peak

...as allele frequencies that maximize the average fitness of a population 's members. adaptive radiation ... Full article >>> Wright's explanation for stasis was that organ isms come to occupy adaptive peak s. In order to evolve to an other, higher peak, the species would first have...

Adaptive landscape

...r different loci plotted in the plane; and mean fitness for each combination plotted in the third dimensi...icle >>> In evolutionary biology , fitness landscapes or adaptive landscape s are used to visualize the relationship between genotype s (or ...

Adaptation

...ecoming fitted to an environment , or the mutual fitness of an organ ism and its environment s Source: N...ptation : a condition or character which afford fitness to a species in a particular environment . Adaptive radiation : evolution ary divergence of me...