AP Biology UNIT 6: Gene Expression and Regulation

About this course

If DNA is the blueprint of life, Unit 6 is where we learn how that blueprint is read, interpreted, and controlled. Gene expression and regulation lie at the heart of biology, determining how cells function, adapt, and specialize. This unit takes you beyond the structure of DNA into the dynamic processes that bring genetic information to life.We begin with the flow of information from DNA to RNA to protein, breaking down the essential processes of transcription and translation. You’ll explore how mRNA, tRNA, and rRNA work together with ribosomes to build proteins, and why the genetic code is considered nearly universal. But biology is not just about making proteins—it’s about controlling when, where, and how much of each protein is made.That’s where gene regulation comes in. You’ll study bacterial models like the lac and trp operons, which illustrate how cells conserve energy by turning genes on or off as needed. Then we’ll zoom into eukaryotic cells, where regulation is far more complex, involving epigenetics, transcription factors, enhancers, silencers, and RNA interference. These mechanisms explain how identical DNA in every cell can give rise to diverse tissues like muscle, neurons, or skin.This unit also emphasizes the cutting-edge applications of gene regulation, from biotechnology and CRISPR gene editing to understanding cancer and genetic diseases. By mastering these concepts, you’ll see how gene expression connects the molecular world of DNA with the larger themes of growth, adaptation, and survival.Unit 6 is where the code of life stops being static letters on a page—and becomes a story written in real time by your cells.IMPORTANT NOTE: Students under the age of 18, parents, caregivers and guardians are required to purchase this course and allow their students to benefit from it!

Course objectives

• to master the processes of transcription and translation
• to explore gene regulation mechanisms in different organisms
• to connect molecular biology concepts to real-world applications in biotechnology and medicine