| ECETOC | European Centre for Ecotoxicity and Toxicology of Chemicals |
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| ETICBACK | Environmental Toxicology Information Center Backfile |
| IST | inappropriate sinus tachycardia; insulin sensitivity test; insulin shock therapy; International Soci... |
| NTP | National Toxicology Program; nitroprusside; normal temperature and pressure; nucleoside triphosphate... |
| NTU | Navy Toxicology Unit |
| genetic marker | A gene which has an easily identifiable phenotype so that one can tell apart cells or individuals which have the gene and those which do not have it. Such a gene can also be used as a probe to mark cell nuclei or chromosomes so that they can easily be isolated or identified from other nuclei or chromosomes later. (09 Oct 1997) |
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| genetic markers | A phenotypically recognizable genetic trait which can be used to identify a genetic locus, a linkage group, or a recombination event. (12 Dec 1998) |
| genetic material | A gene, a part of a gene, a group of genes, or fragments of many genes, on a molecule of DNA, a fragment of DNA, a group of DNA molecules, or fragments of many DNA molecules. Could refer to anything from a small fragment of DNA to the entire genome of an organism. (09 Oct 1997) |
| genetic model | A formalised conjecture about the behaviour of a heritable structure in which the component terms are intended to have literal interpretation as standard structures of empirical genetics. (05 Mar 2000) |
| genetic penetrance | The extent to which a genetically determined condition is expressed in an individual. (05 Mar 2000) |
| genetic polymorphism | The occurrence in the same population of multiple discrete alletic states of which at least two have high frequency (conventionally of 1% or more). (05 Mar 2000) |
| genetic psychology | A science dealing with the evolution of behaviour and the relation to each other of the different types of mental activity. (05 Mar 2000) |
| genetic recombination | <molecular biology> Formation of new combinations of alleles in offspring (viruses, cells or organisms) as a result of exchange of DNA sequences between molecules. It occurs naturally, as in crossing over between homologous chromosomes in meiosis or experimentally, as a result of genetic engineering techniques. (18 Nov 1997) |
| genetic screening | The process of testing individuals to find out if they carry genes for certain known genetic diseases, such as sickle cell anaemia. (09 Oct 1997) |
| genetic techniques | Chromosomal, biochemical, intracellular, and other methods used in the study of genetics. (12 Dec 1998) |
| genetic testing | Identifying foetuses or infants afflicted with hereditary diseases or conditions, and carriers of recessive disorders by means of DNA analysis. See: DNA markers, familial screening, prenatal screening. Synonym: genetic testing. (05 Mar 2000) |
| genetic transformation | <molecular biology> Genetic change brought about by the introduction of exogenous DNA into a cell. See: transformation, germ line transformation, transfection. (18 Nov 1997) |
| genetic variance | Within a population, the measure of how much of the variation of a particular phenotype is due to genotypic variation (as opposed to environmental factors. An example might be the height of a human as determined by genes inherited from the human's parents. See: environmental variance. (09 Oct 1997) |
| genetic vectors | Plasmids, bacteriophages, or viruses used during recombinant DNA techniques that transport foreign genes into recipient cells. Genetic vectors possess a functional replicator site and contain a genetic marker to facilitate their selective recognition. (12 Dec 1998) |
| recombination, genetic | Production of new arrangements of genes by various mechanisms such as assortment and segregation, crossing over, gene conversion, transformation, conjugation, transduction, f-duction, or mixed infection of viruses. (12 Dec 1998) |