| 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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| darwinian | Pertaining to Darwin; as, the Darwinian theory, a theory of the manner and cause of the supposed development of living things from certain original forms or elements. This theory was put forth by Darwin in 1859 in a work entitled "The Origin of species by Means of Natural Selection." The author argues that, in the struggle for existence, those plants and creatures best fitted to the requirements of the situation in which they are placed are the ones that will live; in other words, that Nature selects those which are survive. This is the theory of natural selection or the survival of the fillest. He also argues that natural selection is capable of modifying and producing organisms fit for their circumstances. See Development theory, under Development. Origin: From the name of Charles Darwin, an English scientist. Source: Websters Dictionary (01 Mar 1998) |
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| darwinian ear | An auricle in which the upper border is not rolled over to form the helix, but projects upward as a flat, sharp edge. (05 Mar 2000) |
| Darwinian evolution | The proposition that the phylogeny of all species is wholly ascribable to the combined effects of random variation (mutation) in genotypes of the members of a stock as a result of the operation of undirected accidents with consequences to their phenotypes and the operation of preferential (but by no means certain) survival of those resulting phenotypes most suited to survive in the contemporary environment. The proposed system survives largely because of genetic factors that avidly conserve the ontogeny of the stock. (05 Mar 2000) |
| darwinian reflex | The tendency of young infants to grasp a bar and hang suspended. Compare: grasping reflex. (05 Mar 2000) |
| darwinian theory | The theory of the origin of species and of the development of higher organisms from lower forms through natural selection (survival of the fittest in the struggle for existence), and of the evolution of humans from an ancestor common to himself and the apes. (05 Mar 2000) |
| darwinian tubercle | A small projection from the upper end of the posterior portion of the incurved free margin of the helix. Synonym: tuberculum auriculae, darwinian tubercle, tuberculum superius. (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) |
| 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) |
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