Mock exam

College Level Biology Exam

Multiple Choice Questions

1. What is the primary mechanism of evolution proposed by Charles Darwin?

   • A) Genetic Drift

   • B) Mutation

   • C) Natural Selection

   • D) Gene Flow

2. Which of the following conditions is NOT required for Hardy-Weinberg Equilibrium?

   • A) Large Population

   • B) Random Mating

   • C) Mutation

   • D) No Selection

3. Which type of selection favors intermediate phenotypes?

   • A) Directional Selection

   • B) Stabilizing Selection

   • C) Disruptive Selection

   • D) Sexual Selection

4. In terms of fossil records, what is significant to understanding evolutionary history?

   • A) Fossils provide direct evidence of mutation events.

   • B) Fossils can show transitional forms.

   • C) Fossils lead to absolute age calculations only.

   • D) Fossils are irrelevant to evolutionary trends.

5. Which of the following describes the bottleneck effect?

   • A) A reduction in genetic variation due to a dramatic decrease in population size.

   • B) A founding population that expands outwards.

   • C) Changes in gene frequency due to random mating.

   • D) Migration of individuals into or out of a population.

Open Questions

1. Explain how natural selection differs from artificial selection and give examples of each.

2. Describe the concept of adaptive evolution and its significance in evolutionary biology.

3. Define genetic drift and explain its potential impact on small populations.

4. Discuss the roles of sexual selection and its implications for species' traits.

5. Compare and contrast intra- and intersexual selection, providing relevant examples of each.

Answers

1. C) Natural Selection

2. C) Mutation

3. B) Stabilizing Selection

4. B) Fossils can show transitional forms.

5. A) A reduction in genetic variation due to a dramatic decrease in population size.