Over time, the movement of people on Earth has steadily increased. This has altered the course of human evolution by increasing

Over time, the movement of people on Earth has steadily increased. This has altered the course of human evolution by increasing

Over time, the movement of people on Earth has steadily increased. This has altered the course of human evolution by increasing 




A) nonrandom mating.
B) geographic isolation.
C) genetic drift.
D) gene flow.


Answer: D