Question 1

Which of the following best defines microevolution?

Accepted Answer

The change in allele frequencies within a population over time.

Question 2

A population of flowers has three phenotypes: red ($$C^RC^R$$), white ($$C^WC^W$$), and pink ($$C^RC^W). If $$there are 30 individuals of each phenotype in a population of 90, what is the frequency of the $$C^R$$ allele?

Accepted Answer

$$0.50$$

Question 3

Which of the following is necessary to determine if a population is evolving?

Accepted Answer

Measuring the change in allele frequencies over time.

Question 4

Why is genetic variation important for evolution?

Accepted Answer

It allows populations to adapt to changing environments.

Question 5

If a population is not evolving, what can be said about its allele frequencies?

Accepted Answer

They remain constant over generations.

Question 6

Given a population of 90 flowers with 30 $$C^RC^R$$, 30 $$C^WC^W$$, and 30 $$C^RC^W$$, what is the frequency of the $$C^W$$ allele?

Accepted Answer

$$0.50$$

Question 7

Which of the following scenarios would indicate that evolution is occurring in a population?

Accepted Answer

The allele frequencies change from one generation to the next.

Question 8

If the frequency of allele $$A in a $$population is $$0.6$$, what is the expected frequency of allele $$a$$?

Accepted Answer

$$0.4$$

Question 9

Which of the following best describes the relationship between phenotype and genotype in the context of microevolution?

Accepted Answer

Genotype determines phenotype, and changes in allele frequencies (genotype) can lead to changes in phenotype distribution.

Question 10

A scientist observes that the frequency of a particular allele in a population remains unchanged over several generations. What can be inferred about the population?

Accepted Answer

The population is not evolving with respect to that allele.

Question 11

Which of the following is an example of microevolution in a real-world context?

Accepted Answer

A population of bacteria develops resistance to an antibiotic over several generations.

Question 12

If a population of 100 individuals has 40 individuals with genotype $$AA$$, 40 with $$Aa$$, and 20 with $$aa$$, what is the frequency of allele $$A$$?

Accepted Answer

$$0.6$$

Question 13

Which of the following statements about evolution is correct?

Accepted Answer

Evolution is defined as a change in allele frequencies in a population over time.

Question 14

A population of animals is exposed to a new predator. Over several generations, the frequency of alleles for faster running speed increases. What does this scenario illustrate?

Accepted Answer

Natural selection leading to adaptive evolution.

Question 15

Which of the following would NOT result in microevolution?

Accepted Answer

A population's allele frequencies remain unchanged over time.

Microevolution: Evolution of Populations

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