constitutive mutation


Also found in: Medical.

constitutive mutation

[′kän·stə‚tüd·iv myü′tā·shən]
(genetics)
A mutation that modifies an operator gene or a regulator gene, resulting in unregulated expression of structural genes that are normally regulated.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.