Question 1

According to Erasmus Darwin's concept of 'descent with modification,' what is implied about the origin of animals?

Accepted Answer

All animals have a similar origin, from a single living filament.

Question 2

Aristotle's view of biological species before Darwin included the concept of the Scala Naturae. What did this concept propose?

Accepted Answer

Species are fixed and can be arranged on a ladder of increasing complexity.

Question 3

Lamarck proposed the principle of use and disuse. Which of the following best describes this principle?

Accepted Answer

Traits acquired during an organism's lifetime can be inherited by offspring.

Question 4

Which statement about epigenetic inheritance is supported by recent scientific findings?

Accepted Answer

Some non-DNA traits, such as methyl groups attached to DNA, can be passed down generations.

Question 5

During his voyage on the HMS Beagle, what key observation did Darwin make about finches on the Galapagos Islands?

Accepted Answer

Finch beak shapes matched their food sources, indicating adaptation to their environment.

Question 6

How did Darwin's ideas about species change after his voyage on the HMS Beagle?

Accepted Answer

He realized that species can change and adapt to their environment, though he did not yet know the mechanism.

Question 7

Which geologist influenced Darwin's thinking about gradual change and the age of the Earth?

Accepted Answer

James Hutton, who proposed uniformitarianism.

Question 8

Thomas Malthus's essay on population growth influenced Darwin. What key idea did Darwin apply to non-human populations?

Accepted Answer

Population growth can outpace food supply, leading to competition and natural selection.

Question 9

Darwin observed that offspring tend to resemble their parents. Which concept does this support in evolutionary theory?

Accepted Answer

Heritable variation within populations.

Question 10

Which of the following best summarizes Darwin's idea of evolution by natural selection?

Accepted Answer

Individuals with traits best suited to the environment tend to leave more offspring, causing favorable traits to accumulate over time.

Question 11

Which equation best represents the concept of population growth as described by Malthus?

Accepted Answer

$$N_t = N_0$ e$$^{rt}$$

Question 12

If a population of finches is exposed to a new food source requiring stronger beaks, which process would most likely lead to an increase in beak strength over generations?

Accepted Answer

Natural selection favoring individuals with stronger beaks.

Question 13

Which of the following is NOT a conclusion drawn by geologists that influenced Darwin?

Accepted Answer

Species are fixed and do not change.

Question 14

Which observation did Darwin make that was critical to his theory of natural selection?

Accepted Answer

Individuals in a population vary in their heritable characteristics.

Question 15

Which of the following is an example of human-induced variation that Darwin studied?

Accepted Answer

Animal and plant breeding to produce desired traits.

Question 16

Which process is described by the equation $$N_t = N_0$ e$$^{rt}$$?

Accepted Answer

Exponential population growth.

Question 17

Which of the following statements about Lamarck's theory is correct?

Accepted Answer

Species change through use and disuse, and acquired traits are inherited.

Question 18

Darwin's research led him to infer that favorable traits accumulate in a population over time. What is the mechanism for this accumulation?

Accepted Answer

Individuals with favorable traits are more likely to survive and reproduce.

Question 19

Which of the following best describes the difference between Darwin's and Lamarck's explanations for adaptation?

Accepted Answer

Darwin proposed adaptation occurs through natural selection acting on heritable variation, while Lamarck proposed adaptation occurs through use and disuse of traits.

Question 20

Which real-world example best illustrates Darwin's concept of adaptation?

Accepted Answer

Peppered moths changing coloration in response to industrial pollution.

Descent with Modification and the Foundations of Evolutionary Biology

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