Question

change in the allele frequency of a population due to chance
goographic separation
natural selection
genetic drift
frequency
variation
mutation
evolution

Explanation:

To solve this, we analyze each option:

• Geographic separation: Involves physical separation of populations, not allele frequency change by chance.
• Natural selection: Depends on fitness, not chance.
• Genetic drift: Defined as change in allele frequency due to random (chance) events.
• Frequency: Just a measure, not a process of change.
• Variation: Refers to differences, not chance - driven frequency change.
• Mutation: Is a source of variation, not chance - driven frequency change.
• Evolution: A broader concept, genetic drift is one mechanism of evolution.

Answer:

C. genetic drift