auxotrophic mutant

(redirected from defective organism)
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auxotrophic mutant

[¦ȯk·sə¦trä·fik ′myüt·ənt]
(genetics)
An organism that requires a specific exogenous growth factor, such as an amino acid, for its growth.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.