Question 1

Which of the following best describes the relationship between natural selection and evolution?

Accepted Answer

Natural selection is a mechanism that drives evolution by favoring individuals with advantageous traits.

Question 2

A population of beetles lives in an environment where birds prefer to eat light-colored beetles. Over time, the population becomes mostly dark-colored. Which concept does this scenario best illustrate?

Accepted Answer

Natural selection

Question 3

Which of the following is a key difference between ladder thinking and tree thinking in evolutionary biology?

Accepted Answer

Ladder thinking organizes species by increasing complexity, while tree thinking organizes species by evolutionary relationships.

Question 4

Which of the following statements about Lamarck’s theory of evolution is INCORRECT according to modern genetics?

Accepted Answer

Traits that are used regularly will become enhanced and inherited by offspring.

Question 5

Which of the following is the best example of a homologous structure?

Accepted Answer

The forelimbs of whales, bats, and humans, which have similar bone arrangements.

Question 6

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

Accepted Answer

Bacteria with mutations that confer resistance survive and reproduce, increasing the frequency of resistance genes in the population.

Question 7

Which of the following statements is FALSE regarding the evidence for evolution?

Accepted Answer

Analogous structures are inherited from a common ancestor.

Question 8

A scientist finds a fossil with both dinosaur-like teeth and bird-like feathers. According to evolutionary theory, what does this fossil most likely represent?

Accepted Answer

A transitional form between dinosaurs and birds.

Question 9

Which of the following best describes the concept of fitness in evolutionary biology?

Accepted Answer

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

Question 10

Which of the following is a misconception about evolution?

Accepted Answer

Evolution is just a theory, meaning it is not well supported.

Question 11

Which of the following best explains why vestigial structures are considered evidence for evolution?

Accepted Answer

They are remnants of features that served important functions in ancestors.

Question 12

Which of the following statements about artificial selection is correct?

Accepted Answer

Artificial selection is driven by human choices, not by environmental pressures.

Question 13

Which of the following best describes why population thinking is important in biology?

Accepted Answer

It recognizes that variation among individuals is critical for evolution by natural selection.

Question 14

Which of the following is an example of convergent evolution?

Accepted Answer

The wings of bats and the wings of birds, which evolved independently for flight.

Question 15

Which of the following best explains why the light-colored moth became more common in the early 1900s in England?

Accepted Answer

Pollution decreased, making light-colored moths less visible to predators.

Question 16

Which of the following statements about the process of speciation is correct?

Accepted Answer

Speciation occurs when populations become reproductively isolated and diverge genetically.

Question 17

Which of the following best describes the main difference between natural selection and artificial selection?

Accepted Answer

Natural selection is driven by environmental pressures, while artificial selection is driven by human choices.

Question 18

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

Accepted Answer

The appendix

Question 19

Which of the following statements about the role of mutations in evolution is correct?

Accepted Answer

Mutations introduce new genetic variation, which can be acted upon by natural selection.

Question 20

Which of the following best explains why the forelimbs of whales, bats, and humans are considered homologous structures?

Accepted Answer

They share a similar underlying bone structure inherited from a common ancestor.

Ch. 22 – Descent with Modification: A Darwinian View of Life (Study Notes)

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