Definitions for "REGULATORY GENES"
Keywords:  vpr, tat, nef, rev, vpu
HIV genes (nef, rev, tat, vpr) whose protein products are not required for but help regulate viral replication in infected cells.
Segments of a gene which regulate the switching on (expression) of the gene or nor (repression). There are several different types of genes involved in this, and the details are beyond the scope of a secondary Biology course. Interested students may read further about the Operon model of the gene in more advanced texts.
Genes that have roles in turning on or off the transcription of structural genes.