Question 1

Which of the following best explains why the blue-footed booby has bright blue feet, as seen in the first image, from an evolutionary perspective?

Accepted Answer

The blue feet are a sexually selected trait, favored because they attract mates and increase reproductive success.

Question 2

The diagram of finch beaks from the Galapagos Islands illustrates which evolutionary concept?

Accepted Answer

Divergent evolution, where related species develop different traits due to adaptation to different environments.

Question 3

According to Lamarck's theory, as illustrated in the giraffe diagram, how do organisms acquire new traits?

Accepted Answer

By inheriting traits that their parents acquired during their lifetime.

Question 4

Which equation best represents the Hardy-Weinberg principle for allele frequencies in a population?

Accepted Answer

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

Question 5

Which of the following is NOT a condition required for Hardy-Weinberg equilibrium?

Accepted Answer

Natural selection favoring certain alleles

Question 6

The ship shown in the sixth image is historically significant because it:

Accepted Answer

Was the vessel for a famous naturalist's voyage that led to the development of the theory of natural selection.

Question 7

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

Accepted Answer

Homologous structures have similar origins and may have different functions; analogous structures have different origins but similar functions.

Question 8

The phylogenetic tree of elephants shows branching patterns over time. What does each branch point (node) represent?

Accepted Answer

A common ancestor shared by the lineages diverging from that point.

Question 9

Which of the following is an example of convergent evolution?

Accepted Answer

The similar body shapes of dolphins (mammals) and sharks (fish) due to adaptation to aquatic environments.

Question 10

Which of the following best explains why vestigial structures, such as the eyes of blind cave fish, persist in populations?

Accepted Answer

They have no negative effect on survival, so there is no selective pressure to eliminate them.

Question 11

Which of the following is a real-world example of coevolution?

Accepted Answer

The relationship between E. coli and humans, where E. coli produces vitamin K and humans provide food and shelter.

Question 12

Which of the following statements about natural selection is TRUE?

Accepted Answer

Natural selection edits existing traits, making organisms better suited to their environment, but not perfect.

Question 13

Which of the following is NOT evidence for evolution?

Accepted Answer

Artificial selection

Question 14

The process of artificial selection differs from natural selection in that:

Accepted Answer

Artificial selection is driven by human choice, while natural selection is driven by environmental pressures.

Question 15

Which of the following best describes evolutionary fitness?

Accepted Answer

The ability of an organism to survive and reproduce in its environment.

Question 16

Which of the following scenarios illustrates the concept of genetic variation enabling natural selection?

Accepted Answer

A population of moths with both light and dark coloration, where the frequency of each color changes depending on environmental conditions.

Question 17

Which of the following is a derived characteristic in a cladogram?

Accepted Answer

A new trait that appears at a branch point and is shared by all members of a clade above that point.

Question 18

Which of the following best explains why antibiotic resistance in bacteria is an example of natural selection?

Accepted Answer

Bacteria with resistance genes survive and reproduce when antibiotics are present, increasing the frequency of resistance alleles in the population.

Question 19

Which of the following is an example of a vestigial structure in humans?

Accepted Answer

The appendix

Evolution: Mechanisms, Evidence, and Patterns

Study Guide - Practice Questions