Question 1

Which of the following is NOT a requirement for natural selection to occur?

Accepted Answer

Survival must be random.

Question 2

According to Darwin’s inferences, what is the primary reason some individuals leave more offspring than others?

Accepted Answer

They possess inherited traits that increase survival and reproduction in their environment.

Question 3

Which of the following best describes adaptive radiation?

Accepted Answer

The rapid evolution of diversely adapted species from a common ancestor.

Question 4

What real-world example demonstrates natural selection in response to introduced plant species?

Accepted Answer

Soapberry bugs evolving beak size to match fruit size.

Question 5

Why is the evolution of drug-resistant bacteria considered a direct observation of evolutionary change?

Accepted Answer

It demonstrates how natural selection acts on existing variation to increase resistance in populations exposed to antibiotics.

Question 6

Which of the following statements about homology is correct?

Accepted Answer

Homologous structures are anatomical resemblances that represent variations on a structural theme present in a common ancestor.

Question 7

What is a vestigial structure?

Accepted Answer

A remnant of a feature that served an important function in the organism’s ancestors.

Question 8

Which scenario best illustrates convergent evolution?

Accepted Answer

Wings in bats and birds evolving independently for flight.

Question 9

What does the fossil record provide evidence for? Select the most complete answer.

Accepted Answer

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

Question 10

How does biogeography support the theory of evolution?

Accepted Answer

By demonstrating that closely related species are often found in the same geographic region, supporting common ancestry and adaptation to local environments.

Question 11

Which of the following is an example of an endemic species?

Accepted Answer

A species of finch found only on the Galápagos Islands.

Question 12

Why is the use of antibiotics a strong selective pressure for bacteria?

Accepted Answer

It selects for bacteria that already have resistance genes, allowing them to survive and reproduce.

Question 13

Which of the following best explains why natural selection does not create new traits?

Accepted Answer

Natural selection acts on traits already present in the population.

Question 14

A population of fish is repeatedly harvested for individuals that are easily caught. Over several generations, the population becomes harder to catch. What evolutionary process is this an example of?

Accepted Answer

Angling-induced evolution through natural selection.

Question 15

Which of the following equations represents the Hardy-Weinberg equilibrium for allele frequencies in a population?

Accepted Answer

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

Question 16

If a trait is not heritable, what will happen to its frequency in a population under natural selection?

Accepted Answer

It will not change in frequency due to natural selection.

Question 17

Which of the following is a correct statement about analogous traits?

Accepted Answer

They result from convergent evolution in unrelated groups.

Question 18

Which of the following best describes the relationship between fruit size and beak size in soapberry bugs?

Accepted Answer

Beak size evolves to closely match the size of the fruit in the environment.

Question 19

Which of the following is NOT a type of evidence that supports evolution?

Accepted Answer

The random distribution of species across the globe.

Evolution and Evidence for Evolution: Study Notes for General Biology

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