conditional mutation
A mutation that is only expressed under certain environmental conditions, for example temperature-sensitive mutants.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

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  • conditional lethal mutation — A mutation that is lethal under one set of environmental conditions (the restrictive conditions, commonly associated with high temperature) but is viable under another set of environmental conditions (the permissive conditions) …   Glossary of Biotechnology

  • temperature-sensitive mutation — t s mutation a conditional mutation producing a protein product with a temperature dependent instability; thus the phenotype is normal at some (permissive) temperatures, but expression of the mutation can be elicited at other (restrictive)… …   Medical dictionary

  • temperature-sensitive mutation — (= ts mutation) A type of conditional mutation in organism, somatic cell or virus that makes it possible to study genes whose total inactivation would be lethal. Such ts mutations can also make possible studies of the effect of reversible… …   Dictionary of molecular biology

  • cold-sensitive mutation — a conditional mutation producing a gene functional at high temperatures and nonfunctional at low …   Medical dictionary

  • heat-sensitive mutation — a conditional mutation producing a gene functional at low temperatures and nonfunctional at high …   Medical dictionary

  • lethal mutation — a mutation that results in the premature death of the organism; see also conditional lethal m …   Medical dictionary

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