locus control region
Also found in: Acronyms, Wikipedia.
locus control region[¦lō·kəs kən′trōl ‚rē·jən]
A segment of DNA that controls the chromatin structure and thus the potential for replication and transcription of an entire gene cluster, such as the beta-globin cluster in vertebrates.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.