Nature Research
Scitable: Gene Expression and Regulation
Investigate gene expression with this collection of resources that explains how DNA is expressed to make RNA, how genes are turned "on" and "off", and what must occur for transcription to happen. The webpage explores gene expression by...
Khan Academy
Khan Academy: Overview: Gene Regulation in Bacteria
Get an overview of operons, regulatory DNA sequences, and regulatory genes. Also, explore repressor and activator proteins.