Final answer:
Population undergoing natural selection involves a change in the environment, phenotypic variations, and changes in genetic frequencies.
Step-by-step explanation:
Population undergoing natural selection can be described using the following order of events:
- A change occurs in the population's environment.
- Phenotypic variations shift.
- Individuals who are poorly adapted do not survive at the same rate as individuals who are well adapted.
- Genetic frequencies within the population change.
- Individuals who are well-adapted leave more offspring than individuals who are poorly adapted.
In this process, individuals with favorable traits have a higher chance of surviving and reproducing, leading to a change in the genetic makeup of the population over time.