auxotrophic mutant

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• auxotrophic — [ôk΄sə träf′ik] adj. 〚< Gr auxein, to increase + TROPHIC〛 designating or of a mutant organism requiring more nutritional substances than its prototrophic parent because it has lost the ability to make a certain enzyme auxotroph [ôk′səträf΄] n. *… …   Universalium

• auxotrophic — [ôk΄sə träf′ik] adj. [< Gr auxein, to increase + TROPHIC] designating or of a mutant organism requiring more nutritional substances than its prototrophic parent because it has lost the ability to make a certain enzyme auxotroph [ôk′səträf΄] n …   English World dictionary

• mutant — 1. A phenotype in which a mutation is manifested. 2. A gene that is rare and usually harmful, in contrast to a wild type gene, not necessarily generated recently. active m. a m. with overt phenotypic expression. amber m. a m. with a mutation… …   Medical dictionary

• List of genetics-related topics — This is a list of terms related to genetics. NOTOC # * 3 end * 5 end A * Acentric chromosome * Achondroplasia * Active site * Adam s Curse * Adaptation * Adenine * Adenosine * Adenovirus * Adenosine diphosphate (ADP) * Ala * Alagille syndrome *… …   Wikipedia

• List of genetic engineering topics — NOTOC # 3 end 5 end A Acentric chromosome Achondroplasia Active site Adam s Curse Adaptation Adenine Adenosine Adenosine diphosphate Adenovirus ADP Ala Alagille syndrome Albino Alcoholism Alkylating agent Allele Allele frequency Alleles… …   Wikipedia

• organism — Any living individual, whether plant or animal, considered as a whole. calculated mean o. (CMO) a hypothetical o. whose characters are the means of both the positive and negative characters of the organisms which belong to the same taxon as the… …   Medical dictionary

• auxotroph — auxotrophic, adj. /awk seuh trof , trohf /, n. Biol. a mutant organism, esp. a microorganism, that has a nutritional requirement not shared by the parent organism. Cf. prototroph (def. 1). [1950 55; back formation from auxotrophic; see AUXO ,… …   Universalium

• Auxotrophy — is the inability of an organism to synthesize a particular organic compound required for its growth (as defined by IUPAC). An auxotroph is an organism that displays this characteristic; auxotrophic is the corresponding adjective. Auxotrophy is… …   Wikipedia

• auxotroph — A mutant microorganism that requires some nutrient that is not required by the organism (prototroph) from which the mutant was derived. Cf.:polyauxotroph, monoauxotroph. [auxo + G. trophe, nourishment] * * * auxo·troph .trōf, .träf …   Medical dictionary

• Transformation (genetics) — An unrelated process called malignant transformation occurs in the progression of cancer. In molecular biology transformation is the genetic alteration of a cell resulting from the direct uptake, incorporation and expression of exogenous genetic… …   Wikipedia

• auxotroph — [ ɔ:ksətrəʊf, trɒf] noun Biology a mutant organism that requires a particular additional nutrient which the normal strain does not. Derivatives auxotrophic adjective Origin 1950s: from L. auxilium help + Gk trophos feeder …   English new terms dictionary