Before diving in

Unit 4 Required Biology and Chemistry Background

• The theme for this unit is a biology connection - evolution. We have explored skin through it's larger evolutionary story and now we will spend more time examining the evolution of specifically human skin.

Instructions: 

• While watching, please summarize why different skin tones evolved. Include the cytology involved! 

• Please watch the second video in your own time to further your understanding melanocyte physiology.