1. what is used to trace men’s genetics? why can this be used?
2. what is used to trace woman’s genetics? why can this be used?
5. how do scientists know that humans originated in africa?
7. what was the main factor driving the migration of people?
8. what do the people in the philippines tell us about the fragility of genetics?
9. how does climate relate to physical characteristics? what is another factor?
11. why don’t people in central asia appear to have a clear race/nationality?