During a study, a biologist counts the allele frequency of the colors of beetles. In the original population, there were 25% green, 35% blue, and 40% golden beetles. She took a small sample from the original population and bred them for 5 years. At the end of the study, 5 years later, there were 10% green, 60% blue, and 30% golden beetles. What did she observe? Gene flow

Genetic drift

Mutations

Artificial selection