Examlex
The two lobes of the thyroid are connected by the infundibulum.
Inducible Operon
An operon that is normally inactive because a repressor molecule is attached to its operator; transcription is activated when an inducer binds to the repressor, making it incapable of binding to the operator. Compare with repressible operon.
Inducer Molecule
A substance that initiates the expression of genes by interacting with a repressor or an activator.
Active Repressor
A molecular form of a repressor protein that can bind to specific regions of DNA and inhibit gene transcription.
Transcriptional Activity
The process of copying a segment of DNA into RNA by the enzyme RNA polymerase, crucial in gene expression.
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