BIOL 243 · Development and Inheritance · USC Upstate

Development Walkthrough

From one fertilized cell to a newborn, and how traits pass from parents to children. Go at your own pace. Nothing here is graded.

Speed

Think of it like this

Quick check

Wrong answers are fine here. Read why, then try again.

Dr. Akash Garg · BIOL 243 Human Anatomy & Physiology · Chapter 28, Development and Inheritance (OpenStax Anatomy & Physiology 2e) · Use the left and right arrow keys to move between steps. Practice next in the Development Lab.
Diagrams are simplified and not to scale. Cells, sperm and the embryo are drawn far larger than life, the fetal heart and vessels are a flat schematic, and processes that take hours, days or weeks are sped up so you can watch them. Ages are counted from fertilization, as OpenStax does.