You are presented with the question "What happens when people flow into or out of a population?" and the following answer choices: 
- genetic morphing
 - death
 - gene flow
 - movement
 - generic flow
 - interact
 - competition
 - gene expression

Now knowing that gene flow occurs when individuals move into or out of a population and people are individuals, and each person has different needs, choose the best answer.


 

   gene flow      