An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Concept Breadcrumbs

Preferred Term:


An organism that has mutated and has lost its ability to synthesize substances required for its growth and metabolism. The mutant organism requires specific substances as a nutritional supplement in order to grow.
Concept Schemes:
Broader Concept:
Entry Terms:
  • auxotrophic strains
  • auxotrophic mutants
  • auxotrophic organisms
Download this Concept:
RDF/XMLCreated 2006-01-19, last modified 2018-02-27