Question 1

Which of the following best describes the concept of 'differential reproductive success' as it relates to natural selection?

Accepted Answer

Individuals with traits better suited to the environment are more likely to survive and pass on their genes.

Question 2

A population of beetles is introduced to a new environment with limited food resources. Over several generations, only beetles with longer legs are able to reach the food and survive. Which mode of selection is most likely occurring in this scenario?

Accepted Answer

Directional selection

Question 3

Which of the following statements about genetic drift is TRUE?

Accepted Answer

Genetic drift can lead to significant changes in allele frequencies, especially in small populations.

Question 4

The bottleneck effect is best illustrated by which of the following scenarios?

Accepted Answer

A disease drastically reduces a population, leaving only a few survivors with limited genetic variation.

Question 5

Which of the following is an example of an analogous structure?

Accepted Answer

The eye of a human and the eye of an octopus

Question 6

Which scientist is credited with the idea that populations grow faster than the food supply, leading to competition and natural selection?

Accepted Answer

Thomas Malthus

Question 7

A population of birds is split by a natural disaster, and a small group becomes isolated on an island. Over time, this group develops unique traits not found in the original population. This is an example of:

Accepted Answer

Founder effect

Question 8

Which of the following best describes the difference between homologous and analogous structures?

Accepted Answer

Homologous structures share a common evolutionary origin; analogous structures have similar functions due to similar environmental pressures.

Question 9

Which of the following equations represents the Hardy-Weinberg equilibrium for a gene with two alleles, $$p$$ and $$q$$?

Accepted Answer

$$p^2 + 2pq$$ + $$q^2 = 1$

Question 10

Which of the following is NOT a requirement for natural selection to occur?

Accepted Answer

All individuals must survive and reproduce equally

Question 11

Which of the following best explains why cheetahs are considered genetically identical?

Accepted Answer

They have experienced a severe bottleneck effect in their evolutionary history.

Question 12

Which of the following is an example of disruptive selection?

Accepted Answer

Selection favors both very tall and very short individuals, but not those of medium height.

Question 13

Which of the following is a real-world example of gene flow?

Accepted Answer

A population of armadillos migrates from the western region to the eastern region, introducing new alleles.

Question 14

Which of the following best describes the role of transitional fossils like Tiktaalik?

Accepted Answer

They exhibit intermediate traits between ancestral and descendant groups, illustrating evolutionary change.

Question 15

Which of the following is an example of inter-sexual selection?

Accepted Answer

Females choosing males based on the brightness of their feathers.

Question 16

Which of the following statements about carbon dating is correct?

Accepted Answer

Carbon dating is effective for dating organic material up to about 50,000 years old.

Question 17

Which of the following best describes artificial selection?

Accepted Answer

Selection of traits by humans for desired characteristics.

Question 18

Which of the following is a vestigial structure in humans?

Accepted Answer

Appendix

Question 19

A scientist compares the DNA sequences of two species and finds that they share 98% of their genetic code. What does this suggest about their evolutionary relationship?

Accepted Answer

They share a recent common ancestor.

Question 20

Which of the following best explains why the molecular record (such as DNA sequences) is important for understanding evolutionary relationships?

Accepted Answer

It allows scientists to compare genetic similarities and differences to infer common ancestry.

Evolution and Population Genetics: Study Notes for General Biology

Study Guide - Practice Questions

Study Guide - Flashcards