Question 1

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

Accepted Answer

All organisms are related through descent from a common ancestor, with changes accumulating over generations.

Question 2

Which scientist's work on geology most influenced Darwin's thinking about gradual change in Earth's surface?

Accepted Answer

James Hutton & Charles Lyell

Question 3

What is the primary mechanism by which natural selection leads to adaptation in a population?

Accepted Answer

Individuals with favorable inherited traits survive and reproduce more successfully, increasing the frequency of those traits.

Question 4

Which of the following is NOT a type of evidence supporting evolution, as described in the lecture?

Accepted Answer

Astrological predictions

Question 5

A population of soapberry bugs in Florida evolved shorter beaks after feeding on an introduced plant with smaller fruit. This is an example of:

Accepted Answer

Natural selection in response to an introduced species

Question 6

Which statement about natural selection is TRUE?

Accepted Answer

Natural selection acts on heritable variation already present in a population.

Question 7

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

Accepted Answer

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

Question 8

Methicillin-resistant Staphylococcus aureus (MRSA) evolved resistance to antibiotics through:

Accepted Answer

Natural selection favoring bacteria with mutations that allow survival in the presence of methicillin.

Question 9

Which of the following best illustrates the concept of homology?

Accepted Answer

The wings of bats and the arms of humans share similar bone structures.

Question 10

What is the main difference between homologous and analogous structures?

Accepted Answer

Homologous structures have similar anatomy due to shared ancestry, while analogous structures have similar function due to convergent evolution.

Question 11

Which of the following statements about artificial selection is correct?

Accepted Answer

Artificial selection involves humans choosing which individuals reproduce based on desired traits.

Question 12

According to Darwin, what is the relationship between adaptation and the origin of new species?

Accepted Answer

Adaptation to the environment and the origin of new species are closely related processes.

Question 13

Which of the following is a vestigial structure?

Accepted Answer

The human appendix

Question 14

Why did Darwin reason that large morphological gaps between related groups could be explained by branching and extinction events?

Accepted Answer

Branching events can lead to the formation of new groups, while extinction removes intermediate forms.

Question 15

Which of the following best describes biogeography?

Accepted Answer

The scientific study of the geographic distribution of species.

Question 16

Which observation led Darwin to infer that individuals with certain traits leave more offspring?

Accepted Answer

Members of a population often vary in their inherited traits.

Question 17

Which of the following is a direct consequence of populations producing more offspring than the environment can support?

Accepted Answer

Many offspring fail to survive and reproduce.

Question 18

Which of the following is an example of convergent evolution?

Accepted Answer

The wings of bats and the wings of insects both allow flight but evolved independently.

Question 19

Which statement about populations and evolution is correct?

Accepted Answer

Populations evolve, not individuals.

Descent with Modification: A Darwinian View of Life (Chapter 22 Study Notes)

Study Guide - Practice Questions