Dispersal

Definition

Dispersal is the movement of organisms from one place to another, often leading to gene flow between populations. It plays a crucial role in the formation of new species by enabling genetic variation and adaptation to new environments.

5 Must Know Facts For Your Next Test

1. Dispersal mechanisms include wind, water, and animal-mediated transport.
2. Dispersal can lead to allopatric speciation when separated populations diverge genetically.
3. Barriers to dispersal include geographic features like mountains or rivers.
4. Successful dispersal increases genetic diversity within a population.
5. Human activities such as habitat fragmentation can influence dispersal patterns.

Review Questions

• What are the main mechanisms of dispersal in organisms?
• How does dispersal contribute to allopatric speciation?
• What are some barriers that can prevent dispersal?

Related terms

Gene Flow: The transfer of genetic material between separate populations.

Allopatric Speciation: The formation of new species through geographic isolation.

Genetic Drift: Random changes in allele frequencies within a population.