| EPSEM | equal probability of selection method |
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| ISIS | image selected in vivo spectroscopy; imaging science and information system; information system-imag... |
| SERS | Stimulus Evaluation/Response Selection [test] |
| MAS | Marker Assisted Selection |
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| selection | <biology> Placing organisms under conditions where the growth of those with a particular genotype will be favored. (09 Oct 1997) |
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| selection (genetics) | Differential and non-random reproduction of different genotypes, operating to alter the gene frequencies within a population. (12 Dec 1998) |
| selection bias | The introduction of error due to systematic differences in the characteristics between those selected and those not selected for a given study. In sampling bias, error is the result of failure to ensure that all members of the reference population have a known chance of selection in the sample. (12 Dec 1998) |
| selection coefficient | The proportion of progeny or potential progeny not surviving to sexual maturity; usually defined artificially by expressing the fitness of a phenotype as a fraction of the mean or optimal fitness to give the relative fitness, and subtracting this fraction from unity. If the mean size of family in the population is 3.2 and that for a particular genotype is 2.4 then the fitness of the phenotype is 2.4/3.2 =0.75 and the selection coefficient =1-0.75 =.25 = 5 (05 Mar 2000) |
| selection cutting | The periodic removal at short intervals of the oldest and largest trees in the stand, individually or in small groups. (05 Dec 1998) |
| selection pressure | Impact of effective reproduction due to environmental impact on the phenotype. (05 Mar 2000) |
| artificial selection | <genetics> The selective breeding by humans towards a desired trait in a plant, animal, or other organism which is of value (usually economic) to the humans. The process operates on the same principles as natural selection. (09 Oct 1997) |
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| balancing selection | <genetics> A process of natural selection where heterozygous individuals are more adaptive, and thus selected for more often, than either of the two types of homozygous individuals. (09 Oct 1997) |
| blue white colour selection | <molecular biology, procedure> Method for identifying bacterial clones containing plasmids with inserts. Many modern vectors have their polycloning site within a part of the LacZ gene encoding _ galactosidase, which provides _ complementation in an appropriate mutant E. Coli strain. This means that a re ligated (empty) vector will produce blue colonies when grown on plates containing IPTG and X gal, but colonies with a substantial insert in their plasmid's polycloning site are unable to produce functional _ galactosidase and so produce white colonies. (16 Dec 1997) |
| patient selection | Criteria and standards used for the determination of the appropriateness of the inclusion of patients with specific conditions in proposed treatment plans and the criteria used for the inclusion of subjects in various clinical trials and other research protocols. (12 Dec 1998) |
| medical selection | Preservation, by medical care and treatment, of individuals of pathologic genotypes who would not otherwise reproduce, thus tending to increase the frequency of pathologic genes in the population; conversely, reduction of the frequency of pathologic genes by preventing reproduction of individuals of specified genotype by surgical sterilization or other means. (05 Mar 2000) |
| personnel selection | The process of choosing employees for specific types of employment. The concept includes recruitment. (12 Dec 1998) |
| clonal selection | <cell biology> The process whereby one or more clones, i.e. Cells expressing a particular gene sequence are selected by naturally occurring processes from a mixed population. Generally the clonal selection is for general expansion by mitosis, particularly with reference to B lymphocytes where selection with subsequent expansion of clones occurs as a result of antigenic stimulation only of those lymphocytes bearing the appropriate receptors. (18 Nov 1997) |
| clonal selection theory | A theory which states that each lymphocyte has membrane bound immunoglobulin receptors specific for a particular antigen and once the receptor is engaged, proliferation of the cell occurs such that a clone of antibody producing cells (plasma cell) is produced. (05 Mar 2000) |
| mitotic cell selection | A drug-free procedure for the selection of mitotic cells from an exponentially growing monolayer. (09 Oct 1997) |
| sexual selection | A form of natural selection in which, according to Darwin's theory, the male or female is attracted by certain characteristics, form, colour, behaviour, etc., in the opposite sex; thus modifications of a special nature are brought about in the species. (05 Mar 2000) |
| natural selection | The hypothesis that genotype environment interactions occurring at the phenotypic level lead to differential reproductive success of individuals and hence to modification of the gene pool of a population. (18 Nov 1997) |
| insurance selection bias | Adverse of favourable selection bias exhibited by insurers or enrollees resulting in disproportionate enrollment of certain groups of people. (12 Dec 1998) |
| k selection | <zoology> In evolution, the selection of traits that aid an organisms competitive capability when the population is at or near its carrying capacity. (21 Mar 1998) |
Synonyms : Natural Selections, Selection, Natural, Selections (Genetics), Selections, Natural
Synonyms : Sampling Biases, Sampling Error, Selection Biases, Bias, Sampling, Biases, Sampling, Biases, Selection, Error, Sampling, Errors, Sampling, Sampling Errors
| selection |
choice: the act of choosing or selecting; "your choice of colors was unfortunate"; "you can take your pick" an assortment of things from which a choice can be made; "the store carried a large selection of shoes" choice: the person or thing chosen or selected; "he was my pick for mayor" survival: a natural process resulting in the evolution of organisms best adapted to the environment excerpt: a passage selected from a larger work; "he presented excerpts from William James' philosophical writings"
Ãâó: wordnet.princeton.edu/perl/webwn
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| selection coefficient |
a measure of the disadvantage in survival value of a given genotype as compared with that of a standard genotype in a population.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| selection bias |
Selection bias is the error of distorting a statistical analysis by pre- or post-selecting the samples. Typically this causes measures of statistical significance to appear much stronger than they are, but it is also possible to cause completely illusory artifacts. Selection bias can be the result of scientific fraud which manipulate data directly, but more often is either unconscious or due to biases in the instruments used for observation. ...
Ãâó: en.wikipedia.org/wiki/Selection_bias
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| selection |
In the context of evolution, certain traits or alleles of a species may be subject to selection. Under selection, individuals with advantageous or "adaptive" traits tend to be more successful than their peers reproductively--meaning they contribute more offspring to the succeeding generation than others do. Selection therefore increases the prevalence of these traits, because offspring inherit traits from their parents. ...
Ãâó: en.wikipedia.org/wiki/Selection
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| selection bias |
An error in choosing the individuals or groups to take part in a study. Ideally, the subjects in a study should be very similar to one another and to the larger population from which they are drawn (for example, all individuals with the same disease or condition). If there are important differences, the results of the study may not be valid.
Ãâó: www.stjude.org/glossary
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| selection | the act of choosing or selecting |
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| selection | the person or thing chosen or selected |
| selection | a passage selected from a larger work |
| selection | an assortment of things from which a choice can be made |
| selection | a natural process resulting in the evolution of organisms best adapted to the environment |
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