What causes the movement of alleles between populations?Multiple choice question.Natural selectionThe bottleneck effectMigrationMutation

Understanding the Question

The question asks about the mechanisms that lead to the movement of alleles between populations.

Analyzing the Options

1. Natural Selection: This is the process where organisms better adapted to their environment tend to survive and produce more offspring. While this affects allele frequencies within a population, it does not typically cause allele movement between populations.

2. The Bottleneck Effect: This refers to a sharp reduction in the size of a population due to environmental events or human activities. It can lead to reduced genetic diversity but mostly within one population rather than between populations.

3. Migration: This is the movement of individuals from one population to another, bringing their alleles with them. This directly causes changes in allele frequencies in both the source and destination populations.

4. Mutation: This is a change in the DNA sequence. While it does create new alleles, it does not cause the movement of alleles between populations per se.

Final Answer

The correct answer is Migration, as it directly leads to the movement of alleles between populations.