A group of individuals from a larger population can migrate to a new area and establish a colony, which will be highly susceptible to genetic drift. This is known as

Founder effect.

Explanation:

Migration refers to the movement of a group of people or other living organisms from one geographical region (location) to another geographical destination or colony in search of better living conditions, food, water supply, work or social amenities.

According to the founder effect, a group of individuals or living organisms from a larger population can migrate to a new area in search of better living conditions and establish a colony, which will be highly susceptible to genetic drift.