Question 1

Which of the following best explains why SARS-CoV-2 was able to spread rapidly among humans in late 2019?

Accepted Answer

It was a novel virus with efficient transmission and humans had no prior immunity.

Question 2

What is the primary evolutionary mechanism that allowed SARS-CoV-2 to adapt to human hosts?

Accepted Answer

Natural selection acting on random mutations in the viral genome.

Question 3

Which statement about the 'spike' protein of SARS-CoV-2 is correct?

Accepted Answer

It is critical for the virus's entry into human cells.

Question 4

Which of the following best describes a scientific theory, according to the study materials?

Accepted Answer

A theory is a well-supported explanation of natural phenomena, based on evidence.

Question 5

In evolutionary biology, what is the significance of mutations in the context of viral pandemics?

Accepted Answer

Mutations provide genetic variation that can be acted upon by natural selection.

Question 6

Which equation best represents the Hardy-Weinberg equilibrium for allele frequencies in a population?

Accepted Answer

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

Question 7

A population of insects is exposed to a new pesticide. Over several generations, the frequency of a resistance allele increases. Which evolutionary process is most likely responsible?

Accepted Answer

Natural selection

Question 8

Which of the following is NOT a direct application of evolutionary biology in medicine?

Accepted Answer

Determining the atomic structure of elements

Question 9

Why do evolutionary biologists study the adaptation of termites to living in colonies?

Accepted Answer

To understand the genetic basis of social behavior and environmental adaptation.

Question 10

Which of the following best describes the difference between a hypothesis and a theory in science?

Accepted Answer

A hypothesis is a testable statement, while a theory is a well-supported explanation.

Question 11

Which evolutionary concept explains why the SARS-CoV-2 virus developed multiple variants such as Alpha, Delta, and Omicron?

Accepted Answer

Natural selection acting on mutations that confer advantages in transmission or immune evasion

Question 12

If a population of moths shifts from light to dark coloration due to pollution, which term best describes this change?

Accepted Answer

Directional selection

Question 13

Which of the following is a key insight from Darwin's theory of evolution?

Accepted Answer

Natural selection leads to gradual changes in populations over time.

Question 14

A scientist observes that a new variant of a virus has a combination of mutations in its spike protein. What is the most likely consequence of this for the virus?

Accepted Answer

It may gain an advantage in infecting hosts or evading immunity.

Question 15

Which of the following equations represents the calculation of allele frequency in a population?

Accepted Answer

$$p = \frac{2N_{AA} + N_{Aa}}{2N}$$

Question 16

Which of the following is an example of convergent evolution?

Accepted Answer

The development of wings in bats and birds for flight.

Question 17

What is the main reason why evolutionary biologists use mathematical models?

Accepted Answer

To predict the outcomes of evolutionary processes and test hypotheses.

Question 18

Which of the following statements about adaptation is correct?

Accepted Answer

Adaptations arise through natural selection acting on heritable variation.

Question 19

Which of the following best describes the role of evolutionary biology in understanding pandemics?

Accepted Answer

It helps predict how viruses will mutate and spread in populations.

Question 20

Which of the following is a plausible reason why some SARS-CoV-2 variants became more widespread than others?

Accepted Answer

They had mutations that increased their ability to transmit between hosts.

Evolution, the Themes of Biology, and Scientific Inquiry: The Case of SARS-CoV-2

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