Assertion: gene's mutation | /r/HasAspect | deleterious consequences
Facets:
value: at a lower temperature
type: TEMPORAL
value: to its host organism
type: TRANSITIVE-OBJECT
Source sentences:
text: For example, a temperature-sensitive mutation can cause cell death at high temperature (restrictive condition), but might have no deleterious consequences at a lower temperature (permissive condition).  
text: Duplication creates genetic redundancy, where the second copy of the gene is often free from selective pressure—that is, mutations of it have no deleterious effects to its host organism.
text: For example, a temperature-sensitive mutation can cause cell death at high temperature (restrictive condition), but might have no deleterious consequences at a lower temperature (permissive condition).