Question 1

Which concept best summarizes Darwin's definition of evolution?

Accepted Answer

The process by which species accumulate differences from their ancestors as they adapt to different environments

Question 2

What is the main difference between artificial selection and natural selection?

Accepted Answer

Artificial selection is change in genetic structure due to selective breeding by humans, while natural selection is differential reproduction caused by environmental factors

Question 3

Which of the following is NOT a key feature of natural selection?

Accepted Answer

Natural selection always leads to the extinction of a species

Question 4

Which historical figure developed the binomial format for naming species?

Accepted Answer

Carolus Linnaeus

Question 5

What evidence did Darwin gather during his voyage on the Beagle that supported his theory of evolution?

Accepted Answer

He found that fossils resembled living species from the area in which they were found

Question 6

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

Accepted Answer

The pelvis and leg bones in some snakes

Question 7

What is the primary mechanism proposed by Darwin for evolutionary change?

Accepted Answer

Natural selection

Question 8

Which observation led Darwin to infer that individuals with inherited traits that increase survival and reproduction tend to produce more offspring?

Accepted Answer

Members of a population often vary in their inherited traits

Question 9

Which of the following best describes convergent evolution?

Accepted Answer

The evolution of similar features in distantly related groups due to independent adaptation to similar environments

Question 10

Which scientific field studies the geographic distribution of species and provides evidence for evolution?

Accepted Answer

Biogeography

Question 11

What does the fossil record provide evidence for?

Accepted Answer

The extinction of species, the origin of new groups, and changes within groups over time

Question 12

Which of the following is a direct observation of evolutionary change?

Accepted Answer

The evolution of drug-resistant bacteria

Question 13

Which principle did Jean-Baptiste Lamarck propose to explain evolutionary change?

Accepted Answer

Inheritance of acquired characteristics

Question 14

What is the significance of homologous structures in evolutionary biology?

Accepted Answer

They are anatomical resemblances that represent variations on a structural theme present in a common ancestor

Question 15

Which of the following is an example of biogeographical evidence for evolution?

Accepted Answer

Freshwater fish in the family Galaxiidae live in South America and Australia, separated by wide stretches of open ocean

Question 16

Which equation best represents the concept of descent with modification?

Accepted Answer

$$	ext{Descent with modification} = 	ext{shared ancestry} + 	ext{accumulation of differences}$$

Question 17

Which observation supports Darwin's inference that favorable traits accumulate in populations over generations?

Accepted Answer

All species can produce more offspring than the environment can support

Question 18

Which of the following characters in a hypothetical population could conceivably be under selection, either naturally or artificially?

Accepted Answer

All of the above

Question 19

Which statement about evolutionary trees is correct?

Accepted Answer

Relatedness is determined by the recent common ancestor, not the proximity of groups on the tree

Question 20

Which of the following is a molecular homology that supports evolution?

Accepted Answer

The genetic code shared by all life

Bio 1112- Lecture 2

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