In this lesson, the second in a set of lessons exploring migration, genetic markers, markers in context, and the Genographic Project (a five-year study of human origins and migration based on genetic markers), students will review background information about the basics of DNA and chromosomal structure. They will then explore the Genographic Project and the work of lead scientist Dr. Spencer Wells. Using a hands-on simulation activity, they will learn how genetic markers are passed from generation to generation and haplogroups are formed. Finally, they will use the Atlas of the Human Journey to track one genetic marker over time.