Given a population that contains genetic variation, what is the correct sequence of the following events, under the influence of natural selection?
1)Well-adapted individuals leave more offspring than do poorly adapted individuals.
2)A change occurs in the environment.
3)Genetic frequencies within the population change.
4)Poorly adapted individuals have decreased survivorship.
A) 2 → 4 → 1 → 3
B) 4 → 2 → 1 → 3
C) 4 → 1 → 2 → 3
D) 4 → 2 → 3 → 1
E) 2 → 4 → 3 → 1

Question

Quizplus · Accepted Answer

Natural selection starts with a change in the environment (2), which then affects the survival of individuals based on their adaptations, leading to decreased survivorship of poorly adapted individuals (4). Well-adapted individuals then leave more offspring (1), resulting in a change in genetic frequencies within the population (3).

Given a Population That Contains Genetic Variation, What Is the Correct