natural selection. disruptive selection. genetic drift. genetic equilibrium.
I gave my students this multiple choice question: When a small group of organisms colonizes a new habitat, the population may be genetically different from the parent population due to differences in allele frequencies. The process responsible for this is

Only one answer is correct among these 4 choices:
- natural selection.
- disruptive selection.
- genetic drift.
- genetic equilibrium.

Could you tell me which one is correct?

genetic drift.