Unreferenced date April 2008 Expert subject Genetics date April 2008 A genetic isolate is population of organisms that has little genetic mixing with other organisms within the same species. This may result in speciation , but this is not necessarily the case. Genetic isolates may form new species in several ways allopatric speciation , in which two populations of the same species are geographically isolated from one another by an extrinsic barrier, and evolve intrinsic genetic reproductive isolation peripatric speciation , in which a small group of a population is separated from the main population, and experiences genetic drift parapatric speciation , in which zones of two diverging populations are separate, but do overlap somewhat partial separation is afforded by geography, so individuals of each species may come in contact from time to time, but selection for specific behaviours or mechanisms may prevent breeding between the two groups. sympatric speciation , a contentious method of speciation in which species diverge while inhabiting the same place. Human influences on genetic isolates include restricted Dog breeding breeding of dogs , or a community living secluded away from others such as Tristan da Cunha or Pitcairn Islands . A far larger and less secluded human genetic isolate is the ethnic Finns , natives of Finland see Finnish disease heritage . See also Language isolate Linkage disequilibrium DEFAULTSORT Genetic Isolate Category Speciation ... more details
Genetic structure refers to any pattern in the genetics genetic makeup of individuals within a population. In the absence of genetic structure, one can infer little to nothing about the genetic makeup of an individual by studying other members of the population. When genetic structure is present, on the other hand, much can be inferred. In trivial terms, all populations have genetic structure, because all populations can be characterised by their genotype or allele frequencies if only 1 of a large sample of moths drawn from a single population have spotted wings, then it is safe to assume that any unknown individual is unlikely to have spotted wings. A more complicated example arises in dense thicket s of plants, where plants tend to be pollination pollinated by near neighbours, and seed s tend to fall and germination germinate near the maternal plant. In such a scenario, plants tend to be more closely related to nearby plants than they are to distant plants and yet they are more likely to breed with nearby plants than they are with distant plants. Thus an inbreeding cycle is created that perpetuates the pattern of plants being closely related to near neighbours. This is a form of genetic structure because one can infer much about the genetic makeup of any individual plant simply by studying plants in its immediately neighbourhood. Category Genetics genetics stub Unreferenced date March 2010 ... more details
Genetic testing also called DNA based tests is among the newest and most sophisticated of techniques ... Gene Testing ref used to test for genetic disorders which involves direct examination of the DNA molecule itself. Other genetic tests include biochemical tests for such gene products as enzyme s and other protein s and for microscopic examination of stained or fluorescent chromosomes. Genetic ... to be expressed preimplantation genetic diagnosis see the side bar, Screening Embryos for Disease prenatal diagnosis prenatal diagnostic testing newborn screening Genealogical DNA test for genetic ... s disease confirmational diagnosis of a symptomatic individual forensic identity testing Genetic testing allows the Genetics genetic medical diagnosis diagnosis of vulnerabilities to inherited diseases , and can also be used to determine a child s paternity genetic father or a person s ancestry .... In addition to studying chromosomes to the level of individual genes, genetic testing in a broader sense includes biochemical tests for the possible presence of genetic diseases, or mutant forms of genes associated with increased risk of developing genetic disorders. Genetic testing identifies changes ... genetictesting title What is genetic testing? Genetics Home Reference publisher Ghr.nlm.nih.gov date ... with inherited disorders. The results of a genetic test can confirm or rule out a suspected genetic condition or help determine a person s chance of developing or passing on a genetic disorder . Several hundred genetic tests are currently in use, and more are being developed. ref cite web url http www.nlm.nih.gov medlineplus genetictesting.html title Genetic Testing MedlinePlus publisher ... health info public unit3 DefinitionsGeneticTesting 3rdDraf18Jan07.xhtml title Definitions of Genetic Testing accessdate 2008 08 10 work Definitions of Genetic Testing Jorge Sequeiros and B rbara Guimar es ... bot H3llBot ref Since genetic testing may open up ethical or psychological problems, genetic testing ... more details
Unreferenced stub auto yes date December 2009 A genetic equilibrium is at hand for an allele in a gene pool when the gene frequency frequency of that allele is not changing i.e. when it is not evolving . For this to be the case, evolutionary forces acting upon the allele must be equal and opposite. The only basic requirement is that the population be large enough that the effects of genetic drift are minimized. For more see heterozygote advantage , fixation , mutation selection balance , negative frequency dependent selection . There may be inbreeding as this reduces heterozygosity but does not cause evolution. No gene mutations Large population size Limited to no immigration, emigration, or migration genetic flow Gene of interest has no effect on survival reproduction, and there is no natural selection Mating is random panmixis See also Hardy Weinberg equilibrium . DEFAULTSORT Genetic Equilibrium Category Population genetics Genetics stub Evolution stub ... more details
Merge from Genism discuss Talk Genetic discrimination Merger proposal date January 2011 essay like date October 2011 Discrimination sidebar Genetic discrimination occurs when people are treated differently ... the risk of an Genetic disorder inherited disorder . People who undergo genetic testing may be at risk for genetic discrimination. The results of a genetic test are normally included in a person s medical ..., genetic test results could affect a person s insurance coverage or employment. People making decisions about genetic testing should be aware that when test results are placed in their medical ... genetic testing . Several countries have laws that help protect people against genetic discrimination however, genetic testing is a fast growing field and these laws don t cover every situation. Public concern against discrimination The term genetic discrimination was first coined by the Council ... ELSI Working Group of the Human Genome Project issued a report titled Genetic Information and Health ... agencies in preventing genetic discrimination in health insurance. Further, the ELSI Working Group and NAPBC recommended that health insurers be prohibited from using genetic information or an individual s request for genetic services to deny or limit health insurance coverage, establish differential rates or have access to an individual s genetic information without that individual s written ... Working Group, cosponsored a series of workshops in the mid 1990s on genetic discrimination in health ... in Science Genetic Information and the Workplace Legislative Approaches and Policy Challenges .... In 1993, the National Academy of Sciences Institute of Medicine IOM Committee on Assessing Genetic ... on the basis of information obtained through genetic testing ref name brant139 cite journal last Brant Rauf first P.W. coauthors Brant Rauf, S.I. title Genetic testing in the workplace Ethical, legal ... . By 1996, the Council for Responsible Genetics had identified over 200 cases of genetic discrimination ... more details
Genetic association is the occurrence, more often than can be readily explained by chance, of two or more traits in a population of individuals, of which at least one trait is known to be genetic. Studies of genetic association aim to test whether single locus alleles or genotype frequencies or more ... subjects and healthy controls . Genetic association studies are based on the principle that genotypes can be compared directly , i.e. with the sequences of the actual genome s. What is genetic association? Genetic association can be between phenotypes, such as visible characteristics such as flower colour or height, between a phenotype and a genetic polymorphism, such as a single nucleotide polymorphism SNP , or between two genetic polymorphisms. Association between genetic polymorphisms occurs ... this is known as genetic linkage . Linkage disequilibrium LD is a term used in the study of population ... other. LD describes a situation in which some combinations of alleles or genetic markers occur ... from alleles based on their frequencies. Genetic association studies are performed to determine whether a genetic variant is associated with a disease or trait if association is present, a particular .... In genetic case control studies, the frequency of alleles or genotypes is compared between the cases ... test between the two groups indicates that the genetic marker may increase risk of the disease or likelihood ... disequilibrium test TDT and haploid relative risk HRR . Both measure association of genetic ... programs of association analysis There are many computer packages for analyzing genetic association .... See also Genetic epidemiology Genetic linkage Linkage disequilibrium Personality genetics ... genetics.org soft A list of computer programs for genetic analysis including genetic association ... for population and family based genetic association analysis http www.gwascentral.org GWAS Central a central database of summary level genetic association findings References Paul I Wde Bakker, Roman ... more details
Orphan date September 2008 Genetic exceptionalism is the belief that genetic information is special and must therefore be treated differently from other types of medical information. For example, patients are able to obtain information about their blood pressure without involving any medical professionals, but obtaining information about their genetic profile might require an order from a physician and expensive counseling sessions. Disclosure of an individual s genetic information or its meaning for example, telling a woman with red hair that she has a higher risk of skin cancer has been legally restricted in some places as providing medical advice . ref Ray, Turna. 18 August 2010. http www.genomeweb.com dxpgx uc berkeley halts genetic testing program touts opportunity ethical debate UC Berkeley Halts Genetic Testing Program, but Touts Opportunity for Ethical Debate Pharmacogenomics Reporter . ref This policy approach has been taken by state legislatures to safeguard individuals genetic information in the United States from the individuals, their families, their employers, and the government. The approach builds upon the existing protection required of general health information provided by such regulations as Health Insurance Portability and Accountability Act HIPAA . See also HIV exceptionalism , similar rules for HIV AIDS testing References reflist External links http www.ncsl.org programs health genetics prt.htm State Genetic Summary Table on Privacy Laws DEFAULTSORT Genetic Exceptionalism Category Healthcare policy in the United States Category Privacy Category Data privacy Category Genetics ... more details
Genetic counseling is the process by which patients or relatives, at risk of an inherited disorder , are advised ... title Definitions of Genetic Testing accessdate 2008 08 10 work Definitions of Genetic Testing ... 2008 09 11 Dead link date September 2010 bot H3llBot ref Genetic counselors The National Society of Genetic Counselors NSGC officially defines genetic counseling as the process of helping people understand and adapt to the medical, psychological and familial implications of genetic contributions to disease ... to promote informed choices and adaptation to the risk or condition. A genetic counselor is an expert with a Master of Science degree in genetic counseling. In the United States they are certified by the American Board of Genetic Counseling. http www.abgc.net In Canada, genetic counselors are certified by the Canadian Association of Genetic Counsellors. Most enter the field from a variety of disciplines ... needed date October 2010 Genetic counselors should be expert educators, skilled in translating the complex language of genomic medicine into terms that are easy to understand. Genetic counselors work as members of a health care team and act as a patient advocate as well as a genetic resource to physicians. Genetic counselors provide information and support to families who have members with birth defect s or genetic disorder s, and to families who may be at risk for a variety of inherited ... available genetic testing options with the family. Genetic counselors are present at high risk or specialty prenatal clinics that offer prenatal diagnosis , pediatric care centers, and adult genetic centers. Genetic counseling can occur before conception i.e. when one or two of the parents are carriers of a certain trait through to adulthood for adult onset genetic conditions, such as Huntington s disease or hereditary cancer syndromes . Patients Any person may seek out genetic counseling for a condition ... for genetic counseling if a risk is discovered through prenatal testing screening or diagnosis ... more details
Expert subject Genetics date June 2009 A genetic predisposition is a genetics genetic affectation which influences the phenotype of an individual organism within a species or population but by definition that phenotype can also be modified by the natural environment environmental conditions. In the rest of the population, conditions cannot have that effect. Genetic test ing is able to identify individuals who are genetically predisposed to certain disease health problems . Behavior Predisposition is the capacity we are born with to learn things such as language and concept of self. Negative environmental influences may block the predisposition ability we have to do some things. Animal behavior Behaviors displayed by animals can be influenced by genetic predispositions. Genetic predisposition towards certain human behaviors is Ethology scientifically investigated by attempts to identify patterns of human behavior that seem to be invariant over long periods of time and in very different cultures. For example, philosopher Daniel Dennett has proposed that humans are genetically predisposed to have a theory of mind because there has been evolution ary selection for the human ability to adopt ... of others based on personal knowledge of what you would do. It has been proved that there s no genetic predisposition for learning a particular language. Genetic discrimination in health insurance The Genetic Information Nondiscrimination Act , which was http www.genome.gov 24519851 signed ... based on genetic information. See also Human nature Edward Osborne Wilson E. O. Wilson s book on sociobiology and his book Consilience discuss the idea of genetic predisposition to behaviors The field ... Theory Genetic discrimination Psychiatric genetics Gene environment correlation Medical genetics of Ashkenazi ... Press Reprint edition 1989 ISBN 0 262 54053 3 External links http www.genome.gov 10002328 Genetic discrimination fact sheet from the National Human Genome Research Institute . DEFAULTSORT Genetic Predisposition ... more details
Unreferenced auto yes date December 2009 Genetic architecture refers to the underlying genetic basis of a phenotype phenotypic Trait biological trait . A synonymous term is the genotype phenotype map , the way that genotypes map to the phenotypes. The genotype phenotype map has been analyzed in terms of several principal axes epistasis, polygeny, pleiotropy, quasi continuity, modularity, phenotypic plasticity, robustness, and evolvability. Epistasis when the alleles at one Locus genetics locus change the phenotypic effects of genetic variation at another locus, the two genes are said to exhibit epistasis in their interactions. Polygeny when multiple genes contribute to a particular phenotypic character, the map is said to possess polygeny . The genetic architecture in cases of polygeny can be further characterized by the spectrum of contributions of the genes, e.g. many genes of small effect vs. few genes of large effect. Pleiotropy when multiple phenotypic characters are affected by a single genetic variation, the map is said to possess pleiotropy . Quasi continuity when small genetic changes map to small phenotypic changes, the map is said to possess Lewontin quasi continuity Lewontin . Modularity when two different phenotypic characters can be mapped to mostly non overlapping sets of genes, the map is said to possess modularity , though this concept is still in flux in the scientific literature. Phenotypic plasticity Plasticity when a single genotype gives rise to a spectrum of phenotypes, the phenotype is said to have plasticity . The plasticity may occur as different phenotypes among different individuals of the same genotype, or different phenotypes within the lifetime of a single individual, or different phenotypes in response to specific environmental conditions ... there is a significant chance that genetic variation can be produced which produces a net increase ... lines. br Genarch DEFAULTSORT Genetic Architecture Category Genetics Genetics stub ... more details
Genetic editing French language French critique g n tique German language German genetische Kritik is an approach to scholarly editing in which an exemplar is seen as derived from a dossier of other manuscript s and events. The derivation can be through physical Cut, copy, and paste cut and paste writing or drawing in a variety of media quotation, annotation or correction acts of physical defacement etc. Genetic editing aims to reconstruct the sequence of actions on the manuscript and exactly which parts of the manuscript were acted upon. Where multiple manuscripts have been combined through for example cut and paste or quotation . ref http www.textualscholarship.org gencrit index.html ref ref http www.cts.dmu.ac.uk index.php?q objectives.html ref ref http www.jstor.org pss 30227768 ref Genetic editing is strong in European, particularly French and German, textual criticism . Completed works of genetic editing are known as genetic editions. Whereas traditional scholarly editing can be seen to as constructing a new document drawing together and comparing many source documents to cast light on a work, genetic editing closely examines a single extant manuscript and traces back each aspect to cast light on the work. Genetic editing is named by analogy with genetics manuscripts individuals are derived from other manuscripts or previous states of the same manuscript and with the derivation tree being a partial Tree data structure ordered tree . As of 2011, there is an active proposal to add genetic editing support to the Text Encoding Initiative s XML format. ref http www.tei c.org Activities Council Working tcw19.html ref Examples HyperNietzsche http www.hypernietzsche.org Ulysses A Critical and Synoptic Edition 1984 Gabler, Steppe, and Melchior ISBN 0824043758 References Reflist Category Digital humanities Category Editing Category Textual criticism ... more details
Unreferenced date December 2009 Orphan date September 2008 In evolutionary biology , genetic anthropomorphism refers to thinking like a gene . The central question is if I were a gene, what would I do in order to reproduce myself . The question is an obvious fallacy genes are incapable of thought . However, natural selection does act in a such a way that those that are most successful at reproducing themselves by following the optimum strategy prosper. Thinking like a gene enables the results to be visualised. This is related to a philosophical tool known as the intentional stance . The most notable genetic anthropomorphist was the British biologist W.D. Hamilton . Hamilton s friend Richard Dawkins popularised the idea. It is important to think like a gene rather than an organism . Anthropomorphism has been criticised on a number of grounds, including that it is reductionist . DEFAULTSORT Genetic Anthropomorphism Category Evolutionary biology ... more details
To be genetically viable , having a realistic chance of avoiding the problems of inbreeding , a population of plants or animal s requires a certain amount of genetic diversity , and consequently a certain minimum number of members. See effective population size . The minimum is normally somewhere in the region of a hundred unrelated individuals. Where a population has become extremely small in a population bottleneck , due for example to near extinction of the species , it may have lost its genetic viability, and if numbers recover it will be through inbreeding, possibly leaving an unhealthy population. But in fact it provided a more diverse population thus limiting the amount of genetic disorder or repetition. Unreferenced date April 2009 Category Genetics genetics stub ... more details
Genetic variability 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 publisher Yale University accessdate 2007 05 24 url http www.cbc.yale.edu old cce papers ALife node2.html ... and genetics genetic influences. ref name YAL1995 Genetic variability in a population is important .... 2011. Genetic diversity of Maghrebian Hottentotta Scorpiones Buthidae scorpions based on CO1 new ... selection of the most fit variants. Genetic variability also underlies the differential susceptibility ... the extent of human genetic variation such as the International HapMap Project HapMap project . Causes There are many sources of genetic variability in a population br Homologous recombination is a significant ... the male and female parents cross over one another and exchange genetic material. The chromosomes ... it will increase the genetic variability of the next generation if it reproduces. ref name EHR2005 cite journal author Ehrich, Dorothy and Per Erik Jorde title High Genetic Variability Despite High ... allows for even more recombination during meiosis allowing for even more genetic variability in one ... is an exact genetic copy of the parent, there are limited sources of genetic variability. One thing ... and Janet Gehring title Genetic Variability and its Ecological Implications in the Clonal Plant Carex ... Genetic mutations &ndash contribute to the genetic variability within a population and can have positive ... title Genetic Variability publisher NewYork Oxford University Press year 1980 ref This variability .... However, the smaller a population and its genetic variability are, the more likely the recessive hidden deleterious mutations will show up causing genetic drift . ref name WIL1980 See also Evolvability Human genetic variation References reflist 2 Category Population genetics bg de Genetische ... more details
Essay date May 2009 Refimprove date May 2009 Genetic enhancement refers to the use of genetic engineering ... therapy involves using genetic engineering to alter defective genes or insert corrected genes into the body ... genetic enhancement and gene therapy . However, whether a genetic modification procedure is deemed ... of the genetic alteration. But the classification of the goal will necessarily depend on how disease or normal is defined. Genetic enhancement in humans If genetic enhancement is defined such that it includes drugs that are made with genetic knowledge or using rDNA techniques, then forms of genetic ... n6570 pdf 380113a0.pdf ref Using the results of genetic tests to make reproduction reproductive decisions based on non disease traits could be considered to be a form of passive genetic enhancement ... of host genetic material, and a five to ten percent frequency of insertional mutagenesis . ref http ... transfer will not result in a heritability heritable genetic modification. Germ line gene transfer, on the other hand, will produce transmittable genomic changes. Concerns regarding genetic enhancement A number of concerns are raised by genetic enhancement. The concerns are based on ideas of equality ... of Social Equality An issue that arises in the context of genetic enhancement is the provision of equal access to genetic enhancement technologies. The high cost of genetic enhancement could prevent all but the wealthy from gaining access to enhancement procedures. Wealth based genetic enhancement ... justice notions issues would arise, as the net effect of genetic enhancement procedures felt by those ... who cannot afford genetic enhancement procedures. The costs associated with the procedures would ... concerns There is some concern that genetic enhancement could affect human evolution . ref http www.genome.gov ... reproductive success . Furthermore, any genetic modification that does not affect germ cells will not be transmitted ... are actually passed on, evolution in memes may occur if genetic modification of parents improved ... 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 genetic variability , which describes the tendency of genetic characteristics to vary. Genetic diversity serves ... 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 ... constantly. When a disease causing bacterium changes to attack a specific genetic variation, it can ... more details
distinguish Genetic engineering In artificial intelligence , genetic programming GP is an evolutionary ... program s that perform a user defined task. It is a specialization of genetic algorithms GA where ... of modern tree based Genetic Programming that is, procedural languages organized in tree based structures ... has pioneered the application of genetic programming in various complex optimization and search problems. ref http www.genetic programming.com genetic programming.com Home Page Bot generated title ref ... date November 2008 Program representation Image Genetic Program Tree.png frame A function represented ... genetic programming which suits the more traditional imperative languages see, for example ... assembly language . Genetic operators The main operators used in evolutionary algorithm s such as GP ... missing values. Other approaches The basic ideas of genetic programming have been modified and extended in a variety of ways Extended Compact Genetic Programming ECGP Embedded Cartesian Genetic Programming ... genetic populations. ref http wiki.opencog.org w Meta Optimizing Semantic Evolutionary Search OpenCog MOSES ref It has been shown to strongly outperform genetic and evolutionary program learning systems ... convergence. Meta Genetic Programming Meta Genetic Programming is the proposed meta learning computer science meta learning technique of evolving a genetic programming system using genetic programming ... www.idsia.ch juergen diploma.html 1987 THESIS ON LEARNING HOW TO LEARN, METALEARNING, META GENETIC ... Possibly most used http cs.gmu.edu eclab projects ecj ECJ Evolutionary Computation Genetic Programming research system Java http garage.cse.msu.edu software lil gp Lil Gp Genetic Programming ... about.php RobGP Robust Genetic Programming System http www.gnu.org licenses gpl.html GNU ... staff W.Langdon ftp weinbenner gp.html GPC Genetic Programming C Class Library http www.gnu.org licenses gpl.html GNU GPL C http cswww.essex.ac.uk staff sml gecco TinyGP.html TinyGP A tiny genetic ... more details
Genetic epidemiology is the study of the role of genetics genetic factors in determining health and disease in families and in populations, and the interplay of such genetic factors with environmental factors. In slightly more formal language, genetic epidemiology was defined by Morton as a science which ... of Genetic Epidemiology publisher Karger location New York isbn 3 8055 2269 X ref It is closely ... ref cite web url http www.dorak.info epi genetepi.html title Introduction to Genetic Epidemiology author M. Tevfik Dorak date 2008 03 03 accessdate 2008 03 04 ref Familial aggregation studies Is there a genetic ...? Genetic segregation Segregation studies What is the dominance relationship pattern of inheritance of the disease e.g. dominant or recessive ? Genetic linkage Linkage studies On which part of which chromosome is the disease gene located? Genetic association Association studies Which allele of which ... monogenic disorder s and locating the genes responsible. More recently, the scope of genetic ... of many genetic polymorphism s that influence the risk of developing many common diseases. image ... or another genotoxic factor. Malformed frogs are caused by parasites, genetic disease or pollution ... frogs were found in Minnesota. see external link below See also Thalidomide Genetic disorder Molecular ... cite book author Khoury, M.J. coauthors Beaty, T.H. Cohen, B.H. year 1993 title Fundamentals of genetic ... 1978 editor1 last Morton editor1 first Newton E editor2 last Chung editor2 first Chin Sik title Genetic ... journal doi 10.1017 S0003480096005891 year 1997 author Morton, N.E title Genetic Epidemiology journal ... A scientific foundation for using genetic information to improve health and prevent disease editor1 ... uk catalogue ?ci 9780195146745 cite book doi 10.1002 0470011815.b2a05034 chapter Genetic Epidemiology ... 2005 cite book last Thomas first D.C. year 2004 title Statistical Methods in Genetic Epidemiology ... refend cite book last Teare first M.D. year 2011 title Genetic Epidemiology publisher Springer ... more details
Note Genetic assimilation is sometimes used to describe eventual extinction of a natural species as massive ... crop. ref http www.biochem.northwestern.edu holmgren Glossary Definitions Def G genetic assimilation.html ref This usage is unrelated to the usage below. Genetic assimilation is a process by which the effect .... Genetic assimilation is merely a method of overcoming the barrier to selection imposed by genetic ... pathway, genetic variation of pathway components results in a continuous spectrum of phenotypes ... of their genotype under normal environmental circumstances. However, a given genetic make up does ... breeding these are said to phenocopy the desired genetic trait. With several generations of artificial selection in this manner, perhaps aided by mutagenesis , the genetic variation can be reduced to that of the furthest ... duplicated genetically. Image canalization problem.png thumb 350 px right The classic example of genetic ... Genetic 20assimilation title A Conceptual History of Modern Embryology publisher Plenum Press location ... without ether treatment. Genetic assimilation in natural selection It has not been proven that genetic ... CJ title Perspective Genetic assimilation and a possible evolutionary paradox can macroevolution ... I, Matessi C title Canalization, genetic assimilation and preadaptation. A quantitative genetic model ... by natural selection, genetic assimilation will occur. In the 1960s C. H. Waddington and J. M. Rendel argued for the importance of genetic assimilation in natural adaptation as a means of providing ... argued that genetic assimilation proceeds at the cost of a loss of developmental plasticity, and should be a minor mechanism. If it occurs frequently, genetic assimilation could contribute to punctuated ... Genetic assimilation generally describes the production of phenotypes with altered or decreased responsiveness ... the phenotype for every condition. Genetic accommodation can be used to refer more broadly to changes in gene frequency that result from environmentally induced phenotypes. When used by contrast with genetic ... more details
Refimprove date October 2007 Genetic anthropology is a new branch of scientific study which deals with combining DNA data with available physical evidence and past histories of civilizations. This would enable scientists to glean through available genetic information that would go a long way in explaining how the modern day Homo sapiens evolved through the millennia. The Genographic Project , a joint collaboration between IBM and the National Geographic Society is a multi million dollar step in this endeavor. The database is scheduled to become publicly available from June 28, 2007 in PLoS Genetics , an open source , peer reviewed magazine. See also Cross cultural studies Anthropology Origin of the Nilotic peoples Archaeology Cross cultural researcher Human evolution Genetics External links http www.ucl.ac.uk tcga The Centre for Genetic Anthropology Departments of Anthropology and of Biology, University College London Category Anthropology Category Genetics anthropology stub genetics stub ... more details
Genetic Heterogeneity is a phenomenon in which a single phenotype or genetic disorder may be caused by any one of a multiple number of alleles or non allele locus genetics locus mutations. ref Turnpenny and Ellard, Emery s Elements of Medical Genetics, 13th Edition. Elsevier Limited, 2007. ISBN 978 0 7020 2917 2 ref This is in contrast to pleiotropy , where a single gene may cause multiple phenotypic expressions or disorders. Genetic heterogeneity can be classified as either allelic or locus . Allelic heterogeneity means that different mutations within a single gene locus forming multiple alleles of that gene cause the same phenotypic expression. For example, there are over 1000 known mutant alleles of the CFTR gene CFTR gene that cause cystic fibrosis . Locus heterogeneity means that variations in completely unrelated gene Locus genetics loci cause a single disorder. For example, retinitis pigmentosa has autosomal dominant , autosomal recessive , and X linked origins. However, only one mutant locus is needed for the phenotype to manifest. References reflist Category Classical genetics genetics stub it Eterogeneit genetica ... more details
Genetic redundancy is a term typically used to describe situations where a given biochemical function is redundantly encoded by two or more gene s. In these cases, mutation s or defects in one of these genes will have a smaller effect on the fitness of the organism than expected from the genes function. Characteristic examples of genetic redundancy include Enns, Kanaoka et al. 2005 and Pearce, Senis et al. 2004 . Many more examples are thoroughly discussed in Kafri, Levy & Pilpel. 2006 . The main source of genetic redundancy is the process of gene duplication which generates multiplicity in gene copy number. A second and less frequent source of genetic redundancy are convergent evolution ary processes leading to genes that are close in function but unrelated in sequence Galperin, Walker & Koonin 1998 . Genetic redundancy has classically aroused much debate in the context of evolutionary biology Nowak et al., 1997 Kafri, Springer & Pilpel . 2009 . From an evolutionary standpoint, genes with overlapping functions implies minimal, if any, selective pressure s acting on these genes. One therefore expects that the genes participating in such buffering of mutations will be subject to severe mutational drift diverging their functions and or expression patterns with considerably high rates. Indeed it has been shown that the functional divergence of paralogous pairs in both yeast and human is an extremely rapid process. Taking these notions into account, the very existence of genetic buffering, and the functional redundancies required for it, presents a paradox in light of the evolutionary concepts. On one hand, for genetic buffering to take place there is a necessity for redundancies of gene function, on the other hand such redundancies are clearly unstable in face of natural selection ... utilization of genetic redundancy through responsive backup circuits. Proc Natl Acad Sci U S A 103 ... M, Pilpel Y. Genetic redundancy new tricks for old genes. Cell. 2009 Feb 6 136 3 389 92. Category ... more details
Genetic hitchhiking or genetic draft is the process by which an allele may increase in frequency by virtue of being genetic linkage linked to a gene that is positively selected. ref Cite journal doi 10.1098 rstb.2000.0716 pmid 11127900 volume 355 issue 1403 pages 1553 1562 last Barton first N H title Genetic hitchhiking journal Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences accessdate 2009 09 23 date 2000 11 29 pmc 1692896 ref Proximity on a chromosome may allow genes to be dragged along with a selective sweep experienced by an advantageous gene nearby. More generally, genetic hitchhiking can refer to changes in an allele s frequency due to any form of selection operating upon linked genes, including background selection against deleterious mutations. Whether a neutral allele becomes Fixation population genetics fixed is a matter of chance. The traditional view of this stochastic process is that it is dominated by sampling error, that is genetic drift . But it may instead be dominated by whether the allele is linkage disequilibrium linked to a good genetic background this is known as genetic draft. ref Cite journal volume 55 issue 11 pages 2161 2169 last Gillespie first John H. title Is the population size of a species relevant to its evolution? journal Evolution year 2001 pmid 11794777 url http www.ufscar.br evolucao popgen ref12 6.pdf ref Advantage to mutators Consider a hypothetical mutator allele that increases the mutation mutation rate in the area around it. M A On this chromosome the gene M is a mutator allele, increasing the rate of mutation in the surrounding area. A is an allele which is Fixation population genetics fixed in the population. Due to the increased mutation rate, the A allele may be mutated into a new, advantageous allele, A . M A The individual in which this chromosome lies will now have a selective advantage ... created by mutation. A greater distance would increase the chance of genetic recombination recombination ... more details
Genetic Sequencing may refer to DNA sequencing Full genome sequencing dab 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
Infobox Album See Wikipedia WikiProject Albums See Wikipedia WikiProject Albums Name Xeo Genetic Type studio Artist Aux 88 Cover Released February 16, 1999 Recorded Genre Electro music Electro Length 62 58 Label Direct Beat Producer Self produced Reviews Last album Reprogramming The Machine This album Xeo Genetic Next album AUX 88 Xeo Genetic is the fourth studio album by the Electro music electro group Aux 88 . The album was nominated for the Detroit Music Awards ref http www.bookrealdjs.com aux88v2.htm ref . Track listing Begin Intro 1 0 11 Welcome Intro 2 1 02 Play It Loud 5 17 The Light Interlude 0 48 Electric Light 5 25 Synthesizers 5 35 No Time Episode 2 35 I Hear Rhythms 6 05 Radio Waves 5 26 Don t Stop It 4 51 Xeo Genetic 2 59 Just A Test Interlude 0 04 I Need To Find Myself 3 12 Rise Of The Phoenix 6 02 Alien Contact Interlude 0 48 Computer Speaks 4 56 Hydro Spin Episode 1 12 Rhythm By Numbers 4 37 Completed Outro 1 0 32 Return Outro 2 0 07 References reflist Category 1999 albums Category Electro albums ... more details
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