| sos response (genetics) | An error-prone mechanism or set of functions for repairing damaged microbial DNA. Sos functions (a concept reputedly derived from the sos of the international distress signal) are involved in DNA repair and mutagenesis, in cell division inhibition, in recovery of normal physiological conditions after DNA repair, and possibly in cell death when DNA damage is extensive. (12 Dec 1998) |
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| statistical genetics | The study of the applications of principles of statistics to problems in genetics. (05 Mar 2000) |
| q in population genetics | The frequency of the less common of two different alternative (allelic) versions of a gene. (the frequency of the more common allele is p). (12 Dec 1998) |
| quantitative genetics | The formal study of measurable genetic traits, traditionally but not necessarily confined to galtonian genetics. (05 Mar 2000) |
| terminator regions (genetics) | DNA sequences which signal the termination of transcription. (12 Dec 1998) |
| trans-activation (genetics) | Increased rate of gene expression directed by either viral or cellular proteins. These regulatory factors (diffusible gene products) act in trans -- that is, act on homologous or heterologous molecules of DNA. (cis-acting factors act only on homologous molecules.) (12 Dec 1998) |
| translocation (genetics) | A type of aberration characterised by fragmentation of a chromosome and transfer of the broken-off portion to another chromosome, often of a different pair. (12 Dec 1998) |
| transplantation genetics | Genetics as applied to the transplanting of tissues from one animal to another. (05 Mar 2000) |
| epidemiological genetics | The study of genetics as a phenomenon of defined populations by the criteria, methods, and objectives of epidemiology rather than of population genetics. (05 Mar 2000) |