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Transcript 
Chapter 16
The Origin of Species
Active Lecture Questions
Copyright © 2011 Pearson Education Inc.
Which of the following is a species?
1. A group of interbreeding individuals that is
reproductively isolated from other groups
2. A group of organisms and their interactions
with the environment
3. The biotic and abiotic components of an
ecosystem
4. An individual organism and its niche
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Which of the following is a species?
1. A group of interbreeding individuals that is
reproductively isolated from other groups
2. A group of organisms and their interactions
with the environment
3. The biotic and abiotic components of an
ecosystem
4. An individual organism and its niche
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
On the basis of differences in DNA and structure,
West African elephants are thought to be a
different species from Central, East, and South
African savanna elephants and Central African
forest elephants. Which isolation mechanism has
occurred?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Behavioral isolation
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
On the basis of differences in DNA and structure,
West African elephants are thought to be a
different species from Central, East, and South
African savanna elephants and Central African
forest elephants. Which isolation mechanism has
occurred?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Behavioral isolation
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Two populations of the columbine flower had
lived at different altitudes in the same area.
When the two were reunited, they could no
longer breed. Which isolation mechanism has
occurred?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Behavioral isolation
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Two populations of the columbine flower had
lived at different altitudes in the same area.
When the two were reunited, they could no
longer breed. Which isolation mechanism has
occurred?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Behavioral isolation
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
One firefly population mates right after
sundown, and another mates in the middle of the
night. Which isolation mechanism is occurring?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Behavioral isolation
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
One firefly population mates right after
sundown, and another mates in the middle of the
night. Which isolation mechanism is occurring?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Behavioral isolation
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
A female cricket does not understand the mating
call of a male cricket. Which isolation mechanism
is occurring?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Behavioral isolation
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
A female cricket does not understand the mating
call of a male cricket. Which isolation mechanism
is occurring?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Behavioral isolation
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Sea urchins spawn their gametes freely into the
surrounding ocean waters. The sperm of one type
of urchin will not fertilize the egg of another type
of urchin. Which isolation mechanism is
occurring?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Gametic incompatibility
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Sea urchins spawn their gametes freely into the
surrounding ocean waters. The sperm of one type
of urchin will not fertilize the egg of another type
of urchin. Which isolation mechanism is
occurring?
1. Geographical isolation
2. Ecological isolation
3. Temporal isolation
4. Gametic incompatibility
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
A leopard frog and a wood frog mate and
produce offspring, which die within a few days.
Which isolation mechanism has occurred?
1. Geographical isolation
2. Ecological isolation
3. Hybrid inviability
4. Hybrid infertility
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
A leopard frog and a wood frog mate and
produce offspring, which die within a few days.
Which isolation mechanism has occurred?
1. Geographical isolation
2. Ecological isolation
3. Hybrid inviability
4. Hybrid infertility
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
A cross between a male tiger and a female lion is
called a tigon. The tigon is sterile. Which
isolation mechanism has occurred?
1. Geographical isolation
2. Ecological isolation
3. Hybrid inviability
4. Hybrid infertility
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
A cross between a male tiger and a female lion is
called a tigon. The tigon is sterile. Which
isolation mechanism has occurred?
1. Geographical isolation
2. Ecological isolation
3. Hybrid inviability
4. Hybrid infertility
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Two populations of similar-appearing snapping
shrimp live on either side of the Isthmus of
Panama. When the populations are brought
together, neither displays courtship behaviors;
they are hostile toward each other. What type of
speciation is occurring?
1. Hybrid infertility
2. Hybrid inviability
3. Allopatric
4. Sympatric
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
Two populations of similar-appearing snapping
shrimp live on either side of the Isthmus of
Panama. When the populations are brought
together, neither displays courtship behaviors;
they are hostile toward each other. What type of
speciation is occurring?
1. Hybrid infertility
2. Hybrid inviability
3. Allopatric
4. Sympatric
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
More than 300 species of cichlids live in Lake
Malawi in Africa. Although the species are
similar, the fish have different diets, gill
structures, jaws, and teeth. What type of
speciation has occurred?
1. Hybrid infertility
2. Hybrid inviability
3. Allopatric
4. Sympatric
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
More than 300 species of cichlids live in Lake
Malawi in Africa. Although the species are
similar, the fish have different diets, gill
structures, jaws, and teeth. What type of
speciation has occurred?
1. Hybrid infertility
2. Hybrid inviability
3. Allopatric
4. Sympatric
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
The cichlids of Lake Malawi displayed
__________, quickly taking advantage of
unoccupied habitats. (Mammals also did so after
the dinosaurs went extinct.)
1. Allopatric speciation
2. Hybrid selection
3. Adaptive radiation
4. Extinction
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
The cichlids of Lake Malawi displayed
__________, quickly taking advantage of
unoccupied habitats. (Mammals also did so after
the dinosaurs went extinct.)
1. Allopatric speciation
2. Hybrid selection
3. Adaptive radiation
4. Extinction
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
What would NOT make pandas vulnerable to
extinction?
1. An extended range as a result of multiple
populations throughout China
2. Overspecialization on bamboo as their food
source
3. Habitat alteration for farms, homes, and
businesses
4. Competition for resources with black bears
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
What would NOT make pandas vulnerable to
extinction?
1. An extended range as a result of multiple
populations throughout China
2. Overspecialization on bamboo as their food
source
3. Habitat alteration for farms, homes, and
businesses
4. Competition for resources with black bears
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
In the figure, one population eventually becomes
two separate species. What is the mechanism
producing these two species?
1. Sympatric isolation
2. Allopatric isolation
3. Mechanical
incompatibility
4. Ecological isolation
Figure 16-9
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
In the figure, one population eventually becomes
two separate species. What is the mechanism
producing these two species?
1. Sympatric isolation
2. Allopatric isolation
3. Mechanical
incompatibility
4. Ecological isolation
Figure 16-9
Biology: Life on Earth, 9e
Copyright © 2011 Pearson Education Inc.
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