General Biology I (BIOL 101) Gene Regulation: Operons and Epigenetics Exam Review
University of California, Los Angeles
General Biology I (BIOL 101) | Exam Review

Overview
An exam-focused review of how cells control gene expression, including prokaryotic operons and eukaryotic regulation themes professors like to test.

Key topics
•lac and trp operons
•positive vs negative control
•chromatin and epigenetics basics
•transcription factors and enhancers

Suggested study tasks
•predict lac operon expression under different lactose/glucose conditions
•compare operons to eukaryotic regulation in a short table
•match a regulation mechanism to an example

Common pitfalls
•mixing up repressors and activators
•forgetting that lactose is an inducer in the lac system
•assuming all regulation happens at transcription only