Transcript Slide 1

Chapter 15
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Section 3 Evolution in Action
Objectives
Describe how convergent evolution can result
among different species.
Explain how divergent evolution can lead to
species diversity.
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Compare artificial selection and natural selection.
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Explain how organisms can undergo coevolution.
Chapter 15
Section 3 Evolution in Action
Case Study: Caribbean Anole
Lizards
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Ongoing examples of evolution among
living organisms can be observed,
recorded, and tested.
In convergent evolution, organisms
that are not closely related resemble each
other because they have responded to
similar environments.
Chapter 15
Section 3 Evolution in Action
Case Study: Caribbean Anole
Lizards, continued
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Divergence and Radiation
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In divergent evolution, related
populations become less similar as they
respond to different environments.
Adaptive radiation is the divergent
evolution of a single group of organisms
in a new environment.
Chapter 15
Section 3 Evolution in Action
Natural Selection of Anole Lizard Species
Chapter 15
Section 3 Evolution in Action
Artificial Selection
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The great variety of dog breeds is an
example of artificial selection.
Chapter 15
Section 3 Evolution in Action
Coevolution
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The increasing occurrence of antibiotic
resistance among bacteria is an example
of coevolution in progress.
Chapter 15
Standardized Test Prep
Multiple Choice
1. What is the term for the idea that
geologic processes occurring now on Earth
are much the same as those that occurred
long ago?
A. catastrophism
B. uniformitarianism
C. adaptive radiation
D. convergent evolution
Chapter 15
Standardized Test Prep
Multiple Choice, continued
1. What is the term for the idea that
geologic processes occurring now on Earth
are much the same as those that occurred
long ago?
A. catastrophism
B. uniformitarianism
C. adaptive radiation
D. convergent evolution
Chapter 15
Standardized Test Prep
Multiple Choice, continued
2. What is the term for the biological
process by which the kinds of organisms
on Earth change over time?
F. evolution
G. superposition
H. biogeography
J. uniformitarianism
Chapter 15
Standardized Test Prep
Multiple Choice, continued
2. What is the term for the biological
process by which the kinds of organisms
on Earth change over time?
F. evolution
G. superposition
H. biogeography
J. uniformitarianism
Chapter 15
Standardized Test Prep
Multiple Choice, continued
3. When the internal structures of two
species are very similar, what can be
inferred about both species?
A. They share similar environments.
B. They evolved in similar environments.
C. They have similar external structures.
D. They evolved from a common ancestor.
Chapter 15
Standardized Test Prep
Multiple Choice, continued
3. When the internal structures of two
species are very similar, what can be
inferred about both species?
A. They share similar environments.
B. They evolved in similar environments.
C. They have similar external structures.
D. They evolved from a common ancestor.
Chapter 15
Standardized Test Prep
Multiple Choice,
continued
5. vestigial : functional :: vacated :
A. used
B. visceral
C. broken
D. occupied
Chapter 15
Standardized Test Prep
Multiple Choice,
continued
5. vestigial : functional :: vacated :
A. used
B. visceral
C. broken
D. occupied