Question 1

Which of the following best describes the scientific method as applied to evolutionary biology?

Accepted Answer

A systematic approach involving observation, hypothesis formation, experimentation, and analysis.

Question 2

Which equation is used to calculate allele frequencies in a population under Hardy-Weinberg equilibrium?

Accepted Answer

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

Question 3

A population of beetles has two alleles for shell color: G (green) and g (brown). If the frequency of G is 0.7 and g is 0.3, what is the expected frequency of heterozygotes under Hardy-Weinberg equilibrium?

Accepted Answer

$$2pq = 2(0.7)(0.3) = 0.42$$

Question 4

Which of the following is NOT a mechanism of evolutionary change within populations?

Accepted Answer

Mitosis

Question 5

Which evidence best supports the theory of evolution by natural selection?

Accepted Answer

The presence of vestigial structures in modern organisms

Question 6

A scientist discovers a fossil with characteristics of both fish and amphibians. This fossil is best described as:

Accepted Answer

A transitional form

Question 7

Which of the following best explains why antibiotic resistance evolves rapidly in bacteria?

Accepted Answer

Bacteria reproduce quickly, allowing mutations to spread rapidly through populations.

Question 8

Which of the following is an example of allopatric speciation?

Accepted Answer

A population of squirrels is separated by a river, leading to the formation of two distinct species.

Question 9

Which of the following statements about phylogenetic trees is correct?

Accepted Answer

They represent hypotheses about evolutionary relationships.

Question 10

Which of the following best describes the lytic cycle of a virus?

Accepted Answer

The virus injects its DNA into the host, replicates, and causes the host cell to burst.

Question 11

Which feature distinguishes prokaryotes from eukaryotes?

Accepted Answer

Lack of a membrane-bound nucleus

Question 12

Which of the following is a key adaptation that allowed plants to colonize land?

Accepted Answer

Development of a waxy cuticle to prevent water loss

Question 13

Which of the following is a defining characteristic of fungi?

Accepted Answer

Cell walls made of chitin

Question 14

Which of the following best explains the Cambrian explosion?

Accepted Answer

A rapid diversification of animal body plans over a relatively short period.

Question 15

Which of the following is an example of a density-dependent factor affecting population growth?

Accepted Answer

Competition for food resources

Question 16

Which equation describes exponential population growth?

Accepted Answer

$$\frac{dN}{dt} = rN$$

Question 17

Which of the following is a major human impact on the biosphere?

Accepted Answer

Deforestation leading to loss of biodiversity

Question 18

Which of the following best describes a homologous structure?

Accepted Answer

Structures in different species that are similar due to shared ancestry

Question 19

Which of the following is a correct statement about the endosymbiotic theory?

Accepted Answer

Mitochondria and chloroplasts originated from free-living prokaryotes.

Question 20

Which of the following is a real-world example of natural selection?

Accepted Answer

The increase in frequency of antibiotic-resistant bacteria in hospitals.

BIO 104 Learning Objectives: The Process and Diversification of Life

Study Guide - Practice Questions

Study Guide - Flashcards