Question

which of the following can alter allele frequencies quickly in a small population?
natural selection
genetic drift
speciation

Explanation:

• Natural Selection: Acts on traits based on their fitness in the environment. In a small population, its effects on allele frequencies are not as rapid as genetic drift.
• Genetic Drift: Random changes in allele frequencies. In small populations, chance events (like a few individuals not reproducing) can have a big impact on allele frequencies quickly.
• Speciation: The process of forming new species. It is a long - term process that occurs over many generations and is not about quickly altering allele frequencies in a small population.

Answer:

Genetic Drift