Geneticvariability is a measure of the tendency of individual genotype s in a population to vary from one another. Variability is different from genetic diversity , which is the amount of variation seen in a particular population. ref name YAL1995 cite book title Variation and Variability year 1995 ... ref The variability of a trait describes how much that trait tends to vary in response to environmental and genetics genetic influences. ref name YAL1995 Geneticvariability in a population is important ... selection of the most fit variants. Geneticvariability also underlies the differential susceptibility ... it will increase the geneticvariability of the next generation if it reproduces. ref name EHR2005 cite journal author Ehrich, Dorothy and Per Erik Jorde title High GeneticVariability Despite High ... allows for even more recombination during meiosis allowing for even more geneticvariability in one ... is an exact genetic copy of the parent, there are limited sources of geneticvariability. One thing ... and Janet Gehring title GeneticVariability and its Ecological Implications in the Clonal Plant Carex ... Genetic mutations &ndash contribute to the geneticvariability within a population and can have positive ... title GeneticVariability publisher NewYork Oxford University Press year 1980 ref This variability .... However, the smaller a population and its geneticvariability are, the more likely the recessive .... 2011. Genetic diversity of Maghrebian Hottentotta Scorpiones Buthidae scorpions based on CO1 new ... Sousa etal 2011 5 1 494.aspx ref , because without variability, it becomes difficult ... . Variability is an important factor in evolution as it affects an individual s response to environmental ... the extent of human genetic variation such as the International HapMap Project HapMap project . Causes There are many sources of geneticvariability in a population br Homologous recombination is a significant source of variability. During meiosis in sexual organisms, two homologous chromosomes from ... more details
wiktionary variability The term variability , the state or characteristic of being variable , describes how spread out or closely clustered a set of data is. This may be applied to many different subjects Climate variabilityGeneticvariability , a measure of the tendency of individual genotypes in a population to vary from one another Heart rate variability , a physiological phenomenon where the time interval between heart beats varies Human variability , the range of possible values for any measurable characteristic, physical or mental, of human beings Spatial variability , when a quantity that is measured at different spatial locations exhibits values that differ across the locations Statistical variability disambig sr de Variabilit t ... more details
variability biological inheritance , shaped by mutation s, allele allelic differences genetic ...Human variability , or human variation , is the range of possible values for any measurable characteristic, physical or mental, of human beings. Differences can be trivial or important, transient or permanent, voluntary or involuntary, congenital or acquired, genetic or environmental. This article discusses variabilities that characterize a person for all or much of his or her lifetime, and are perceived as not purely learned or readily changed such as religion, language, customs, or tastes . Each person being different is so essential a part of human experience that it is difficult to even imagine a human existence in which other people are identical. Furthermore, the social value put on these differences ... listed above are at least partially determined or affected by genetic factors, few of them are controlled ..., but especially during Child prenatal and early childhood . Many genetic differences polymorphism ... genetic set of individual differences are the blood type s and immune type s we all carry. While ... and enforce our individuality. Social significance and valuation of human variability Human beings rarely ... enough, it is termed a genetic disease , but even this classification has fuzzy edges. There are many ... enough negative consequences to warrant surgical correction. Furthermore, many genetic traits may be advantageous in certain circumstances and disadvantageous in others. Being a heterozygote or Genetic ... homosexual , Pansexuality pansexual , Polysexuality polysexual Human genetic variation Sex Male , female ..., and impermanent acquired variability in physical appearance body modification psychology Psychological ... Creative ability See also Anthropometry Auxology Ergonomics Genetic disease Immunogenetics Population ... links http www.linfo.org human variability.html Human Variability A Brief Introduction Human group differences Category Humans Variability he ... more details
Spatial variability occurs when a quantity that is measured at different spatial locations exhibits values that differ across the locations. Spatial variability can be assessed using spatial descriptive statistics spatial descriptive statistics such as the range statistics range . See also Geostatistics References Isaaks, E.H., Srivastava R.M. Applied Geostatistics. 1989 Fortin, Marie Josee, Dale, Mark. Spatial Analysis A Guide for Ecologists. 2005. Cambridge University Press, 365 pp. External links http amethyst.epa.gov revatoolkit Definitions.jsp http gis.esri.com library userconf proc05 papers pap1184.pdf http www.willingtoncropservices.co.uk case study GPS soil sampling nutrient mapping.htm Willington Crop Services shows spatial variability in action with Case Study on GPS soil sampling, GPS nutrient mapping and nutrient management. Category GPS Category Spatial data analysis ... more details
Orphan date September 2011 The variability hypothesis originated in the early nineteenth century with Johann ... 151. ref Early acceptance Later that century the character of the variability hypothesis was altered ... for the evolutionary process. Following Darwin, the variability hypothesis was instead put forward as man s greater variability compared to women, and its application was soon extended to sex differences ... was taken as evidence of man s greater innate variability. ref name Ben1975 ref name Ben1990 ref ... twentieth century, the variability hypothesis flourished in sociological, psychological, medical ... from armchair dogma about innate female inferiority. Among the proponents of the variability hypothesis ... . ref name Ben1975 ref name Ben1990 ref name Shields1991 One logical conclusion drawn from the variability ... The only significant critic of the variability hypothesis was Karl Pearson , a British psychologist who had studied variability in 1897 and found no sex differences. Pearson s research was the only published scientific investigation of the variability hypothesis prior to the work of American ... Defectives allowed her the opportunity to refute the variability hypothesis. By examining the case records ... ref name B&S1990 ref name Shields1991 Hollingworth also attacked the variability hypothesis ... 1939. The American Journal of Psychology, 53 , 299 301. ref Hollingworth argued that the variability ... variable than women, 2 even if greater anatomical variability in men were established this would ... more variable, 4 variability is not significant in and of itself, but rather depends on what the variability consists of, and 5 that any possible differences in variability between men and women ... Shields1975 Additionally, the argument that great variability automatically meant greater range ... of the variability hypothesis, while avoiding intervening social and cultural factors, Hollingworth ... found virtually no difference in the variability of male and female infants, and it was concluded that if variability ... more details
Primary sources date January 2012 relies entirely on Collani and Wurzburg affiliates The variability function ref Elart von Collani, Defining and Modeling Uncertainty, Journal of Uncertainty Systems , Vol. 2, 202 211, 2008, http www.worldacademicunion.com journal jus jusVol02No3paper05.pdf . ref is the second component of the Bernoulli space which constitutes the stochastic model within Bernoulli stochastics ref Elart von Collani ed. , Defining the Science Stochastics , Heldermann Verlag, Lemgo, 2004. ref . The Bernoulli space describes the transition from past to future. The determinate past is represented by a variable D which is called deterministic variable, because its value is fixed and, therefore, determinate. The future represented by the variable X is subject to randomness and X is therefore called random variable. The random variable X may adopt one of a set of different values according to a random law which depends on the actual initial conditions given by the value d of the deterministic variable D . TOC limit 3 Range of future variability The random variable X stands for the indeterminate future outcome of a process. If the process is repeated then different outcomes will occur according to a random law that depends on the actual initial conditions given by the value d of the deterministic variable D . The random variable X under the condition d is denoted math X d ... . The set of values which may be adopted by the random variable math X d math is given by the variability ... of variability of math X d math . Let math mathfrak D 0 epsilon mathfrak D math then the corresponding range of variability is obtained from the images of the singletons as follows math mathfrak X mathfrak D 0 cup d epsilon mathfrak D 0 mathfrak X d math The range of variability of a random variable contains all those values which may be adopted by the future outcome. It follows that the range of variability ... of the values of the range of variability must be equally considered. References See http en.wikipedia.org ... more details
Solar variability refers to changes in solar activity , such as Solar variation , the change in the amount of radiation emitted by the Sun see Solar radiation see also solar cycle , specifically for the 11 year cyclic variation in solar activity Changes in the solar wind , i.e., charged particle s moving much slower than the speed of light For other uses intitle Lookfrom disambiguation Category Solar phenomena ... more details
wiktionary geneticGenetic may refer to Genetics , in biology, the science of genes, heredity, and the variation of organisms Genetic, used as an adjective, refers to heredity of traits Gene , a unit of heredity in the genome of an organism Genetic linguistics , in linguistics, a relationship between two languages with a common ancestor language Genetic algorithm , in computer science, a kind of search technique modeled on evolutionary biology disambiguation simple Genetic ur ... more details
photoplethysmographic waveform variability in a model of mild to moderate haemorrhage , J Clin ... rate variability Category Cardiology ... more details
unreferenced date April 2012 wikify date April 2012 In statistics , Intra observer variability refers to deviations of a particular observer s score on a particular patient that are not part of a systematic difference. However, Inter observer variability refers to systematic differences among the observers. For example, one physician may consistently score patients at a higher risk level than other physicians. Uncategorized date April 2012 ... more details
Evolutionary biology Genetic Diversity , the level of biodiversity , refers to the total number of Genetics genetic characteristics in the genetic makeup of a species. It is distinguished from geneticvariability , which describes the tendency of genetic characteristics to vary. Genetic diversity serves ... of diversity Genetic variation Geneticvariability Human genetic variation Human Variome Project ... to Genetic Diversity publisher U.S. Geological Survey url http www.nbii.gov portal server.pt ... genetics includes several hypotheses and theories regarding genetic diversity. The neutral ... to overcome that allele. Importance of genetic diversity There are many different ways to measure genetic diversity. The modern causes for the loss of animal genetic diversity have also been studied ... Clem Tisdell year 2003 title Socioeconomic causes of loss of animal genetic diversity analysis ... by the National Science Foundation found that genetic diversity and biodiversity Biodiversity ... http www.enn.com animals article 23391 Study Loss Of Genetic Diversity Threatens Species Diversity ref The interdependence between genetic and biological diversity is delicate. Changes in biological ... in genetic diversity, such as in loss of species, leads to a loss of biological diversity. ref name U.S. Geological Survey Survival and adaptation Genetic diversity plays a very important role in survival .... A species that has a large degree of genetic diversity among its population will have more variations from which to choose the most fit alleles. Increase in genetic diversity is also essential for a species to evolution evolve . Species that have very little genetic variation are at a great risk ..., and offspring often deal with similar problems to those of inbreeding . ref Genetic Diversity ... of a population to certain types of disease s can also increase with reduction in genetic diversity ... breeding leads to monocultures entire farms of nearly genetically identical plants. Little to no genetic ... more details
Please leave this line alone The Tropical Atlantic Variability TAV is influenced by internal interaction and external effects. TAV can be discussed in different time scales seasonal annual cycle and interannual . Annual Cycle Seasonal variability is the dominant time scale of TAV, which is due to the seasonal march of the sun. ref name variability cite web title Tropical Atlantic Variability Patterns, Mechanisms,and Impacts. work Geophysical Monograph publisher AGU year 2004 url http iprc.soest.hawaii.edu users xie Xie Carton.pdf ref This seasonal variability is related to the movement of intertropical convergence Zone ITCZ ,which is the convergent zone of trade winds from south and north near the equator. It has strong vertical convection resulting to a redundant participation band and weak winds. The mean location of the ITCZ over the Atlantic Ocean is 5 10 degrees north of the geographical equator. ref cite web title Climate dynamics of the tropics. work 488 pp., Kluwer Academic, Boston, USA, year 1991 url http www.springer.com earth sciences and geography atmospheric sciences book 978 0 7923 1213 0 author Hastenrath, S. ref ref cite web title The annual cycle in equatorial convection and sea surface temperature publisher J. Clim., 5, 1140 1156, year 1992 url http adsabs.harvard.edu abs 1992JCli....5.1140M author Mitchell, T. P., and J. M. Wallace ref All this asymmetric of ITCZ is the ultimate cause of the annual cycle in equatorial sea surface temperature SST in Atlantic by maintaining southerly cross equatorial winds that intensify in boreal summer fall and relax in boreal spring. ref cite web title The seasonal cycle in a coupled ocean atmosphere model publisher J. Clim .... Annual and interannual variability of temperature in the eastern equatorial Atlantic Ocean hypothesis ... Atlantic variability. On the equator, both observational and modeling studies indicate that there is a Bjerknes ... gradient, ITCZ convection, zonal wind, and thermocline depth. ref name variability References Reflist ... more details
Cleanup rewrite date May 2010 Heart rate variability HRV is a physiological phenomenon where the time ... terms used include cycle length variability , RR variability where R is a point corresponding ... period variability . See also Heart rate turbulence , Sinus rhythm . Methods used to detect beats ... variability and mortality after myocardial infarction. journal Circulation. year 1992 volume 85 ... AJ. title Decreased heart rate variability and its association with increased mortality after acute ... rate variability in risk prediction after myocardial infarction year 2003 author Abildstrom SZ, Jensen ... of Heart Rate Variability as an Indicator of Mental Workload journal Human Factors year 2003 volume ... to low heart rate variability during waking and the subsequent nocturnal sleep period journal International ... et al. title Analysis of heart rate variability in posttraumatic stress disorder patients in response .... This theory emphasizes the role of heart rate variability in understanding the magnitude and nature of vagal outflow to the heart. This theory decomposes heart rate variability based on frequency ..., it now widely accepted that it relfects a mixture of both the SNS and PSNS. Heart rate variability ... Rate Variability year 1973 author Sayers journal Ergonomics volume 16 pages 17 32 issue 1 pmid 4702060 ... rate due to cycles longer than 5 minutes.SDNN reflects all the cyclic components responsible for variability in the period of recording, therefore it represents total variability. RMSSD, the square ... that judges the variability on the basis of the geometric and or graphics properties of the resulting ... rigorous testing has shown that heart rate variability cannot be described as a chaotic process ref name kanters cite journal title Lack of evidence for low dimensional chaos in heart rate variability ... of analysing heart rate variability is the Poincar plot . Each data point represents a pair of successive ... features of heart rate variability? Biomedical Engineering, IEEE Transactions on, Proc. IEEE Transactions ... more details
Genetic variant may refer to A single nucleotide polymorphism SNP , in case it is a common genetic variant A mutation , in case it is a rare genetic variant A copy number variation disambiguation ... more details
A genetic operator is an Operator programming operator used in genetic algorithms to maintain genetic diversity , known as Mutation genetic algorithm and to combine existing solutions into others, Crossover genetic algorithm . The main difference between them is that the mutation operators operate on one chromosome, that is, they are unary, while the crossover operators are binary operators. Genetic variation is a necessity for the process of evolution . Genetic operators used in genetic algorithms are analogous to those in the natural world survival of the fittest , or selection genetic algorithm selection reproduction crossover genetic algorithm crossover , also called recombination and mutation genetic algorithm mutation . Types of Operators 1. Mutation genetic algorithm 2. Crossover genetic algorithm DEFAULTSORT Genetic Operator Category Genetic algorithms compu AI stub ar ca Operador gen tic algorisme gen tic de Genetischer Operator es Operador gen tico zh ... more details
Quantificational variability effect QVE is the intuitive equivalence of certain sentences with quantificational adverbs Q adverbs and sentences without these, but with quantificational determiner phrases DP in argument position instead. 1. a A cat is usually smart. Q adverb 1. b Most cats are smart. DP 2. a A dog is always smart. Q adverb 2. b All dogs are smart. DP ref Adapted from Endriss and Hinterwimmer 2005 . ref Analysis of QVE is widely cited as entering the literature with David Kellogg Lewis David Lewis Adverbs of Quantification 1975 , where he proposes QVE as a solution to Peter Geach s donkey sentence 1962 . Terminology, and comprehensive analysis, is normally attributed to Stephen Berman s Situation Based Semantics for Adverbs of Quantification 1987 . See also Donkey pronoun Notes Reflist External links Core text David Kellogg Lewis Lewis, David . http books.google.com.au books?id Iqx80pAilKcC&pg PA96&lpg PA96&dq 22adverbs of quantification 22 22cast of characters 22&source web&ots NYHamL5W5g&sig SncyvBmJWdNfh4x2Dj k63hCy1s&hl en PRA1 PA20,M1 Adverbs of Quantification . In Formal Semantics of Natural Language . Edited by Edward L Keenan. Cambridge Cambridge University Press , 1975. Pages 3 15. Other texts available online Endriss, Cornelia and Stefan Hinterwimmer. http www.sfb632.uni potsdam.de publications A2 A2 Endriss 2006a.pdf The Non Uniformity of Quantificational Variability Effects A Comparison of Singular Indefinites, Bare Plurals and Plural Definites . Belgian Journal of Linguistics 19 2005 93 120. Literature Core texts Berman, Stephen. The Semantics of Open Sentences . dissertation PhD thesis . University of Massachusetts Amherst , 1991. Berman, Stephen. An Analysis of Quantifier Variability in Indirect Questions . In MIT Working Papers in Linguistics 11 . Edited by Phil Branigan and others. Cambridge MIT Press , 1989. Pages 1 16. Berman, Stephen. Situation Based Semantics for Adverbs of Quantification . In University of Massachusetts Occasional ... more details
Genetic distance refers to the genetics genetic divergence between species or between populations within a species. It is measured by a variety of parameters. Smaller genetic distances indicate a close genetic relationship whereas large genetic distances indicate a more distant genetic relationship. Genetic distance can be used to compare the genetic similarity between different species, such as humans and chimpanzees. Within a species genetic distance can be used to measure the divergence between different sub species. In its simplest form, the genetic distance between two populations is the difference ... individuals is 50.4 among Basques, 41.2 in France and 41.1 in England. Thus the genetic difference between the Basques and French is 9.2 and the genetic difference between the French and the English is 0.1 for the RH negative trait. The genetic distance of several individual traits can then be averaged to compute an overall genetic distance. ref name CavalliSforza Genes, Peoples, and Languages By L. L. Luigi Luca Cavalli Sforza ISBN 0520228731 ref Measures of genetic distance There are several measures used to indicate genetic distance. ref http www.uwyo.edu dbmcd molmark lect06 lect6.html Population Genetics IV Genetic distances biological vs. geometric approaches. ref These include Fixation index A commonly used measure of genetic distance is the fixation index which varies between 0 and 1 ... that two populations are different species. Nei s standard genetic distance This measure assumes that genetic differences arise due to mutations and genetic drift . ref cite journal last Nei et al. title SAMPLING VARIANCES OF HETEROZYGOSITY AND GENETIC DISTANCE url http www.genetics.org cgi content abstract 76 2 379 year 1973 ref Cavalli Sforza and Edwards 1967 This measure assumes that genetic differences arise due to genetic drift only. Reynolds, Weir, and Cockerham s 1983 This measure assumes that genetic differences arise due to genetic drift only. See also Human genetic variation Human ... more details
Genetic memory may refer to Genetic memory biology , present if the state of a biological system depends on its history in addition to present conditions Genetic memory psychology , a memory present at birth that exists in the absence of sensory experience Genetic memory computer science , an artificial neural network combination of genetic algorithm and the mathematical model of sparse distributed memory disambig ar es Memoria gen tica pl Pami genetyczna ... more details
about analysis of the linkage of trait biology traits due to the spatial arrangement of genes on the chromosome , an analysis which dates back to classical genetics Genetic linkage analysis of codons as defined through research on nucleic acids , which is often classed with reverse genetics Genetic code analysis of maternal inheritance related to mitochondrial DNA Mitochondrial DNA Mitochondrial inheritance medical, genealogy genealogical , legal and security applications of genetic research that are mainly directed at humans Genetic testing Genetic analysis can be used generally to describe methods both used in and resulting from the sciences of genetics and molecular biology , or to applied research applications resulting from this research. Genetic analysis may be done to identify genetic inherited disorders and also to make a differential diagnosis in certain somatic diseases such as cancer . Genetic analyses of cancer include detection of mutation s, fusion gene s, and DNA copy number changes. Genetic analyses include but are not limited to molecular technologies such as PCR , RT PCR , DNA sequencing , and DNA microarrays , and cytogenetics cytogenetic methods such as karyotyping and fluorescence in situ hybridisation . Category Genetics genetics stub ... more details
Genetic relationship may refer to Genetic distance , in genetics Genetic relationship linguistics , in language disambig Short pages monitor This long comment was added to the page to prevent it being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Longcomment. Please do not remove the monitor template without removing the comment as well. ... more details
Refimprove date December 2009 Genetic representation is a way of representing solutions individuals in evolutionary computation methods. Genetic representation can encode appearance, behavior, physical qualities of individuals. Designing a good genetic representation that is expressive and evolvable is a hard problem in evolutionary computation. Difference in genetic representations is one of the major criteria drawing a line between known classes of evolutionary computation. Genetic algorithm s use linear binary representations. The most standard one is an array of bit s. Arrays of other types and structures can be used in essentially the same way. The main property that makes these genetic representations convenient is that their parts are easily aligned due to their fixed size. This facilitates simple crossover operation. Variable length representations were also explored in Genetic algorithm s, but crossover implementation is more complex in this case. Evolution strategy uses linear real valued representations, e.g. an array of real values. It uses mostly gaussian mutation and blending averaging crossover. Genetic programming GP pioneered tree like representations and developed genetic operator s suitable for such representations. Tree like representations are used in GP to represent and evolve functional programs with desired properties. ref http www.sover.net nichael nlc publications icga85 index.html Cramer, 1985 ref Human based genetic algorithm HBGA offers a way to avoid solving hard representation problems by outsourcing all genetic operators to outside agents, in this case, humans. The algorithm has no need for knowledge of a particular fixed genetic representation ... for free form and evolving genetic representations. Common genetic representations Genetic algorithm binary array binary tree genetic tree HBGA natural language parse tree References and notes reflist DEFAULTSORT Genetic Representation Category Evolutionary algorithms ... more details
Genetic gain is the amount of increase in performance that is achieved through artificial Genetic engineering genetic improvement programs. This is usually used to refer to the increase after one generation has passed. ref College of Agriculture, http www.ca.uky.edu agripedia glossary genegain.htm Genetic Gain University of Kentucky , accessed 2010 11 23 ref References Reflist colwidth 60em Category Biology Category Genetics Category Agriculture ... more details
Unreferenced auto yes date December 2009 In biology , a genetic program of a cell is a physiology physiological change brought about by a temporal pattern of Transcription genetics activation of a particular subset of gene s. DEFAULTSORT Genetic Program Category Genetics Genetics stub ... more details
unreferenced date March 2011 Genetic ablation is a method of modifying DNA in order to disrupt the production of a specific gene. As genetic ablation may lead to Cell ablation , it can be used as a synonymous term at appropriate times. Category Genetics experiments genetics stub ... more details
Unreferenced stub auto yes date December 2009 Genetic divergence is the process in which two or more populations of an ancestral species accumulate independent genetic changes mutations through time, often after the populations have become Reproductive isolation reproductively isolated for some period of time. In some cases, subpopulations living in ecology ecologically distinct peripheral environments can exhibit genetic divergence from the remainder of a population, especially where the range of a population is very large see parapatric speciation . The genetic differences among divergent populations can involve silent mutations that have no effect on the phenotype or give rise to significant Morphology biology morphological and or physiology physiological changes. Genetic divergence will always accompany reproductive isolation, either due to novel adaptation s via selection or due to genetic drift , and is the principal mechanism underlying speciation . Evolution DEFAULTSORT Genetic Divergence Category Evolutionary biology Category Genetics Genetics stub bg de Divergenz Biologie et Divergents bioloogia id Divergensi genetis ... more details
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