Question 1

Which of the following was a scientist around the time of Charles Darwin?

Accepted Answer

A)  Lamark was a French naturalist that first explored the idea of evolution.
B)  Lyell was a geologist that was examining the age of Earth.
C)  Wallace was an evolutionary biologist developing hypotheses about evolution.
D)  All of the above were scientists around the time of Charles Darwin.

Question 2

If two organisms of different species share more similar DNA sequences with each other than with other species, we can conclude that ________.

Accepted Answer

A)  these two species are not closely related
B)  these two species are very closely related
C)  these two species happen to share similar DNA by chance
D)  there is no relationship between similar DNA and how closely related organisms are

Question 3

If a changing environment increases rates of evolution, why do we see an increase in extinction rates following rapid global catastrophes?

Accepted Answer

Either the change is too swift...

Question 4

Individuals with variations that make them best suited to their environment are, on average, more likely to ________.

Accepted Answer

A)  evolve
B)  change over time
C)  survive and reproduce
D)  become larger

Question 5

The approach that consists in comparing DNA sequences to find evidence of a shared evolutionary history is called ________.

Accepted Answer

A)  genomics
B)  proteomics
C)  comparative anatomy
D)  bioinformatics

Question 6

Which of the following are lines of evidence that support the theory of evolution by natural selection?

Accepted Answer

A)  The study of the geographic distribution of species on Earth
B)  The comparison of DNA sequences in different organisms
C)  The comparison of body structures in modern organisms
D)  All of the above are lines of evidence that support the theory of evolution

Question 7

Which classification grouping includes the greatest number of species?

Accepted Answer

A)  Domain
B)  Order
C)  Phylum
D)  Kingdom

Question 8

A requirement of cladistics is that a grouping must include ________.

Accepted Answer

A)  species that can interbreed
B)  only living species
C)  species with shared traits
D)  a common ancestor and all its descendants

Question 9

What is an exception to the standard biological species concept used to define a species?

Accepted Answer

A)  Species that coevolved cannot be distinguished using this concept.
B)  Natural interbreeding populations cannot be distinguished using this concept.
C)  Asexual species cannot be distinguished using this concept.
D)  Species that do not resemble one another cannot be distinguished using this concept.

Question 10

When did life first appear on the planet?

Accepted Answer

A)  3.5 billion years ago
B)  2.1 billion years ago
C)  3.5 million years ago
D)  2.1 million years ago A

Question 11

Human embryos have a developmental stage during which they have a tail and pharyngeal pouches (those pouches develop into gills in fish) .How can we explain these characteristics of human embryos?

Accepted Answer

A)  Human embryos need a tail and gills to breathe during development in the placenta.
B)  Human embryos spend time in the water where tails and gills are useful.
C)  Human embryos share a common ancestor who had gills.
D)  Both A and B are correct. C

Question 12

The rapid diversification of species seen in the fossil record followed by long periods of stasis is part of the ________ model of evolution.

Accepted Answer

A)  punctuated equilibrium
B)  symmetric
C)  spatial
D)  graduated

Question 13

What does fitness mean when speaking in terms of evolution?

Accepted Answer

A)  Level of overall health of the individual
B)  How many offspring an individual produces
C)  Physical strength of a given individual in a population
D)  The size and diversity of the gene pool

Question 14

Certain traits will have been lost from the gene pool forever.This loss of diversity in a reduced population is called ________.

Accepted Answer

A)  gene flow
B)  genetic drift
C)  bottleneck effect
D)  founder effect

Question 15

Which two observations led Darwin to conclude that there is competition for survival?

Accepted Answer

A)  Overproduction of organisms and limited food resources
B)  Fossils and mutations
C)  Gene and allele differences in organisms
D)  Natural selection and descent with modification

Question 16

What is the fundamental difference between the processes of microevolution and macroevolution?

Accepted Answer

They are fundamentally identical process...

Question 17

Which of the following most often leads to allopatric speciation?

Accepted Answer

A)  Habitat isolation
B)  Behavioral isolation
C)  Gametic incompatibility
D)  Mating time differences

Question 18

All prokaryotes are in the domain ________.

Accepted Answer

A)  Bacteria
B)  Prokarya
C)  Archaea
D)  Prokaryotes are in different domains. D

Question 19

Use the phylogenetic tree below to answer the following question(s) . 
-According to this phylogenetic tree, which bear is most closely related to the American black bear?

Accepted Answer

A)  The sun bear
B)  The Asiatic black bear
C)  The polar bear
D)  The brown bear

Question 20

Before the publication of Charles Darwin's On the Origin of Species, what was the prevailing public consensus regarding species evolution?

Accepted Answer

A)  That species were permanent and unchanging
B)  That species evolved through physical changes that led to success
C)  That species evolved by means of natural selection
D)  That species were modified over time but did not change into new species

Exam 7: Darwinian Evolution

Which of the following was a scientist around the time of Charles Darwin?

Correct AnswerverifiedShow Answer

If two organisms of different species share more similar DNA sequences with each other than with other species, we can conclude that ________.

Correct AnswerverifiedShow Answer

If a changing environment increases rates of evolution, why do we see an increase in extinction rates following rapid global catastrophes?

Correct AnswerverifiedEither the change is too swift...View AnswerShow Answer

Individuals with variations that make them best suited to their environment are, on average, more likely to ________.

Correct AnswerverifiedShow Answer

The approach that consists in comparing DNA sequences to find evidence of a shared evolutionary history is called ________.

Correct AnswerverifiedShow Answer

Which of the following are lines of evidence that support the theory of evolution by natural selection?

Correct AnswerverifiedShow Answer

Which classification grouping includes the greatest number of species?

Correct AnswerverifiedShow Answer

A requirement of cladistics is that a grouping must include ________.

Correct AnswerverifiedShow Answer

What is an exception to the standard biological species concept used to define a species?

Correct AnswerverifiedShow Answer

When did life first appear on the planet?

Correct AnswerverifiedA

Human embryos have a developmental stage during which they have a tail and pharyngeal pouches (those pouches develop into gills in fish) .How can we explain these characteristics of human embryos?

Correct AnswerverifiedC

The rapid diversification of species seen in the fossil record followed by long periods of stasis is part of the ________ model of evolution.

Correct AnswerverifiedShow Answer

What does fitness mean when speaking in terms of evolution?

Correct AnswerverifiedShow Answer

Certain traits will have been lost from the gene pool forever.This loss of diversity in a reduced population is called ________.

Correct AnswerverifiedShow Answer

Which two observations led Darwin to conclude that there is competition for survival?

Correct AnswerverifiedShow Answer

What is the fundamental difference between the processes of microevolution and macroevolution?

Correct AnswerverifiedThey are fundamentally identical process...View AnswerShow Answer

Which of the following most often leads to allopatric speciation?

Correct AnswerverifiedShow Answer

All prokaryotes are in the domain ________.

Correct AnswerverifiedD

Use the phylogenetic tree below to answer the following question(s) . -According to this phylogenetic tree, which bear is most closely related to the American black bear?

Correct AnswerverifiedShow Answer

Before the publication of Charles Darwin's On the Origin of Species, what was the prevailing public consensus regarding species evolution?

Correct AnswerverifiedShow Answer

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Either the change is too swift...
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A

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C

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They are fundamentally identical process...
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D

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