conditional lethal mutant
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Related to conditional lethal mutant: constitutive mutation
conditional lethal mutant[kən′dish·ən·əl ′lē·thəl ′myüt·ənt]
A lethal mutant that expresses characteristics of the wild type when grown under certain conditions, as at a particular temperature, and mutant characteristics under other conditions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.