Q: Given a population of 1000 flowers with the following genotypes: 200 rr, 500 Rr, and 300 RR, what is the frequency of the r allele?

$$ \frac{(2 \times 200) + 500}{2 \times 1000} = 0.45 $$

Question 1

Which of the following best describes the concept of evolution as presented by modern biology?

Accepted Answer

A change in the gene pool of a population over generations, leading to the diversity of life observed today.

Question 2

Which of the following is NOT one of the four main evidences of evolution?

Accepted Answer

Behavioral adaptations

Question 3

Lamarck's theory of evolution is best exemplified by which scenario?

Accepted Answer

A giraffe stretching its neck to reach higher leaves and passing the longer neck to its offspring.

Question 4

Which of the following is a requirement for a population to remain in Hardy-Weinberg equilibrium?

Accepted Answer

No natural selection

Question 5

Given a population of 1000 flowers with the following genotypes: 200 rr, 500 Rr, and 300 RR, what is the frequency of the r allele?

Accepted Answer

$$ \frac{(2 	imes 200) + 500}{2 	imes 1000} = 0.45 $$

Question 6

Which of the following best illustrates the bottleneck effect?

Accepted Answer

A volcanic eruption drastically reduces a population of lizards, leaving only a few survivors.

Question 7

Which mode of natural selection favors individuals with intermediate phenotypes and acts against extremes?

Accepted Answer

Stabilizing selection

Question 8

A scientist finds that the amino acid sequence of a protein in two species is nearly identical. What does this suggest about their evolutionary relationship?

Accepted Answer

They share a recent common ancestor.

Question 9

Which of the following is an example of gene flow?

Accepted Answer

Individuals from one population migrate and breed with another population, introducing new alleles.

Question 10

Which of the following equations represents the Hardy-Weinberg equilibrium for genotype frequencies?

Accepted Answer

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

Question 11

Which of the following is an example of artificial selection?

Accepted Answer

Humans breeding dogs for specific traits such as size or temperament.

Question 12

Which of the following best describes a species?

Accepted Answer

A group of populations whose individuals can interbreed and produce viable offspring.

Question 13

Which of the following is NOT a condition required for Hardy-Weinberg equilibrium?

Accepted Answer

Non-random mating

Question 14

Which of the following is an example of directional selection?

Accepted Answer

A population of moths where darker individuals are favored due to increased pollution.

Question 15

Which of the following best describes the founder effect?

Accepted Answer

A random change in allele frequencies due to a small group colonizing a new area.

Question 16

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

Accepted Answer

The human appendix, which has lost its original function.

Question 17

Which of the following statements about populations and evolution is correct?

Accepted Answer

Populations evolve over many generations.

Question 18

Which of the following is a real-world example of stabilizing selection?

Accepted Answer

Human birth weight, where very low and very high weights have higher mortality.

Question 19

Which of the following best describes macroevolution?

Accepted Answer

The origin of taxonomic groups higher than the species level.

Question 20

Which of the following is a correct example of binomial nomenclature?

Accepted Answer

Homo sapiens

The History of Life and Evidence for Evolution

Study Guide - Practice Questions

Study Guide - Flashcards