Question 1

Which of the following best describes Darwin's concept of 'descent with modification'?

Accepted Answer

Species change over generations, giving rise to new species, with all organisms sharing a common ancestor.

Question 2

Why have no disease-causing bacteria been completely eliminated with antibiotics, according to evolutionary theory?

Accepted Answer

Bacteria mutate randomly, and natural selection favors those with resistance, leading to the evolution of drug-resistant strains.

Question 3

Which of the following is an example of artificial selection?

Accepted Answer

The breeding of domestic dogs from wolves to produce various breeds.

Question 4

Which statement best explains why individuals do NOT evolve, but populations do?

Accepted Answer

Evolution is the change in the genetic composition of a population over generations, not within a single individual's lifetime.

Question 5

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

Accepted Answer

All individuals must survive and reproduce equally.

Question 6

A population of insects is exposed to a new pesticide. After several generations, most insects are resistant. Which process best explains this outcome?

Accepted Answer

Resistant insects survived and reproduced, passing on their resistance genes to the next generation.

Question 7

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

Accepted Answer

The flipper of a seal and the human arm, both containing similar bone structures.

Question 8

Which of the following best illustrates convergent evolution?

Accepted Answer

The similar streamlined body shapes of dolphins (mammals) and sharks (fish) due to adaptation to aquatic environments.

Question 9

Which of the following is a vestigial structure in humans?

Accepted Answer

The appendix, which is a reduced structure with little or no function.

Question 10

Which of the following best describes Darwinian fitness?

Accepted Answer

The ability of an organism to survive and reproduce in its environment, passing on its genes to the next generation.

Question 11

A scientist finds similar fossil species on the coasts of South America and Africa. Which concept best explains this observation?

Accepted Answer

The historical connection of continents (Pangaea) and subsequent continental drift.

Question 12

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 13

Which of the following is NOT a line of evidence supporting evolution?

Accepted Answer

The presence of identical species on every continent.

Question 14

Which scientist first proposed a mechanism for how life evolves, suggesting that organisms have an innate tendency toward increasing complexity?

Accepted Answer

Jean Baptiste Lamarck

Question 15

Which of the following best explains why fitness trade-offs occur in evolution?

Accepted Answer

Selection acts on many traits at once, and improving one trait may reduce the effectiveness of another.

Question 16

Which of the following scenarios best demonstrates the process of natural selection?

Accepted Answer

A population of moths changes color over generations due to predation pressure, with darker moths surviving better in polluted environments.

Question 17

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

Accepted Answer

A species of lemur found only on the island of Madagascar.

Question 18

Which of the following statements about mutations is correct in the context of evolution?

Accepted Answer

Mutations are random events that create genetic variation, which is essential for evolution by natural selection.

Question 19

Which of the following best describes the difference between homologous and analogous structures?

Accepted Answer

Homologous structures arise from common ancestry, while analogous structures arise from convergent evolution.

Question 20

Which of the following best explains why the fossil record is important evidence for evolution?

Accepted Answer

It documents the existence of extinct species and transitional forms, illustrating evolutionary change over time.

Descent with Modification: A Darwinian View of Life – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards