Question 1

The formation of a new species

Accepted Answer

A) can occur any time genetic divergence occurs. 
B) can only occur when two populations are geographically isolated. 
C) can only occur when two populations are sympatric. 
D) is a process that stopped occurring thousands of years ago. 
A) can occur any time genetic divergence occurs. 
B) can only occur when two populations are geographically isolated. 
C) can only occur when two populations are sympatric. 
D) is a process that stopped occurring thousands of years ago.

Question 2

How does coevolution lead to speciation?

Accepted Answer

A) Coevolution is the mechanism that allows allopatric speciation to occur. 
B) Coevolution causes the extinction of species that have limited genetic diversity. 
C) The adaptations that occur during coevolution are passed on to other species. 
D) An adaptation in one organism drives adaptation in a second organism. 
A) Coevolution is the mechanism that allows allopatric speciation to occur. 
B) Coevolution causes the extinction of species that have limited genetic diversity. 
C) The adaptations that occur during coevolution are passed on to other species. 
D) An adaptation in one organism drives adaptation in a second organism.

Question 3

Individuals of the same species generally

Accepted Answer

A) experience prezygotic barriers to reproduction. 
B) do not interbreed extensively. 
C) share many common physical and behavioral characteristics. 
D) vary only very slightly in appearance. 
A) experience prezygotic barriers to reproduction. 
B) do not interbreed extensively. 
C) share many common physical and behavioral characteristics. 
D) vary only very slightly in appearance.

Question 4

Which of the following is an example of a postzygotic barrier?

Accepted Answer

A) The gametes cannot join. 
B) The zygote fails to develop. 
C) The breeding seasons are different. 
D) The courtship behaviors are different. 
A) The gametes cannot join. 
B) The zygote fails to develop. 
C) The breeding seasons are different. 
D) The courtship behaviors are different.

Question 5

A lizard is attacked by a bird.The lizard escapes and survives without his hind legs.Fortunately for this lizard,the loss of his hind limbs allows him to live within a smaller crevice than other lizards of the same species so he experiences less competition.Which of the following is true for this lizard?

Accepted Answer

A) The loss of his legs provided an advantage within his environment. 
B) The loss of his hind legs would be considered an adaptive trait. 
C) A lack of hind limbs should become more common in this population. 
D) This lizard will be unable to reproduce. 
A) The loss of his legs provided an advantage within his environment. 
B) The loss of his hind legs would be considered an adaptive trait. 
C) A lack of hind limbs should become more common in this population. 
D) This lizard will be unable to reproduce.

Question 6

Which of the following is most likely an example of coevolution?

Accepted Answer

A) The color of a rodent's hair changes to better match a new environment. 
B) A parasitic worm develops a new mechanism to attach to the gut lining of an organism that has a special adaptation designed to shed parasitic worms. 
C) Two different species of plants produce flowers that are the same color,which attracts honeybees. 
D) Two unrelated rodent species on different continents develop flaps of skin between their front legs and bodies that allow them to glide between trees. 
A) The color of a rodent's hair changes to better match a new environment. 
B) A parasitic worm develops a new mechanism to attach to the gut lining of an organism that has a special adaptation designed to shed parasitic worms. 
C) Two different species of plants produce flowers that are the same color,which attracts honeybees. 
D) Two unrelated rodent species on different continents develop flaps of skin between their front legs and bodies that allow them to glide between trees.

Question 7

Which of the following must occur for one species to split into two or more species?

Accepted Answer

A) The species must move into a new habitat. 
B) DNA sequences of genes must accumulate differences. 
C) Morphological changes must be obvious within the population. 
D) One species must undergo geographic isolation. 
A) The species must move into a new habitat. 
B) DNA sequences of genes must accumulate differences. 
C) Morphological changes must be obvious within the population. 
D) One species must undergo geographic isolation.

Question 8

In many predator-prey relationships,evolutionary change in the prey will result in evolutionary change in the predator,a phenomenon known as

Accepted Answer

A) polyploidy. 
B) allopatrism. 
C) coevolution. 
D) sympatric speciation. 
A) polyploidy. 
B) allopatrism. 
C) coevolution. 
D) sympatric speciation.

Question 9

Match each numbered statement to one of terms listed below.
-evolution in one species that leads to reciprocal adaptation in another species

Accepted Answer

A) coevolution 
B) biological species concept 
C) morphological species concept 
D) speciation 
E) morphology
F)adaptation 
A) coevolution 
B) biological species concept 
C) morphological species concept 
D) speciation 
E) morphology
F)adaptation

Question 10

The rough-skinned newt produces one of the most potent toxins on the planet.Scientists in Oregon have found that as newts evolve to produce a more deadly toxin,their primary predator,the garter snake,evolves ways to resist the toxin.This is an example of

Accepted Answer

A) ecological trade-offs in the evolution of the newt. 
B) an adaptation of the newt to living in aquatic environments. 
C) reproductive isolation in a population of garter snakes. 
D) coevolution of predator and prey. 
A) ecological trade-offs in the evolution of the newt. 
B) an adaptation of the newt to living in aquatic environments. 
C) reproductive isolation in a population of garter snakes. 
D) coevolution of predator and prey.

Question 11

Which of the following is an example of a prezygotic barrier that can isolate two species living in the same geographic area?

Accepted Answer

A) The members of two populations of birds living in neighboring forests freely interbreed. 
B) One species of cichlid has the same mating behavior as another cichlid species in the same lake. 
C) The gametes of one species of orchid in a rainforest are unable to fuse with the gametes of another species of orchid in the same rainforest. 
D) Two species of wildflowers mate and produce a hybrid that is capable of successfully breeding with either species. 
A) The members of two populations of birds living in neighboring forests freely interbreed. 
B) One species of cichlid has the same mating behavior as another cichlid species in the same lake. 
C) The gametes of one species of orchid in a rainforest are unable to fuse with the gametes of another species of orchid in the same rainforest. 
D) Two species of wildflowers mate and produce a hybrid that is capable of successfully breeding with either species.

Question 12

Two biologists discover two populations of toads living in the same area.Morphologically,these two populations are different.The toads in one population have much wider heads and darker coloration than the second population.One of the biologists suggests names for the two new species.The second biologist questions whether the two populations are separate species.Why is the second biologist hesitant to declare these populations are two species?

Accepted Answer

The biological and morphological species

Question 13

Two species live near each other but do not respond to each other's courtship displays.This is an example of ________ isolation,a type of prezygotic barrier.

Accepted Answer

The answer of Two species live near each other but...

Question 14

The great diversity of life on Earth is caused by the formation of new species in a process known as ________.

Accepted Answer

The answer of The great diversity of life on Earth...

Question 15

Based on the ________ species concept,organisms that breed asexually are most likely classified as species.

Accepted Answer

The answer of Based on the ________ species concept,organisms that...

Question 16

Using reproductive isolation as a method of defining a species is NOT useful for

Accepted Answer

A) species whose ranges overlap. 
B) species that cannot produce hybrids. 
C) organisms known only from fossils. 
D) organisms that reproduce sexually. 
A) species whose ranges overlap. 
B) species that cannot produce hybrids. 
C) organisms known only from fossils. 
D) organisms that reproduce sexually.

Question 17

Which of the following statements gives an example of coevolution?

Accepted Answer

A) Two unrelated species form at the same time after ancestral species populate a newly formed volcanic island. 
B) Two closely related mice species on different mountaintops in the southwest United States both adapt the same trait because food sources are similar. 
C) An ant species and a plant species both develop adaptations in response to changes in the other species. 
D) A wild cat species and a wild dog species both have similar bacteria living in their guts,which allow them to produce vitamin K. 
A) Two unrelated species form at the same time after ancestral species populate a newly formed volcanic island. 
B) Two closely related mice species on different mountaintops in the southwest United States both adapt the same trait because food sources are similar. 
C) An ant species and a plant species both develop adaptations in response to changes in the other species. 
D) A wild cat species and a wild dog species both have similar bacteria living in their guts,which allow them to produce vitamin K.

Question 18

Adaptive evolution allows species to

Accepted Answer

A) reduce mutation rate. 
B) decrease genetic variation. 
C) adjust to environmental changes. 
D) hybridize. 
A) reduce mutation rate. 
B) decrease genetic variation. 
C) adjust to environmental changes. 
D) hybridize.

Question 19

Two birds that are very similar in morphology and live in the same forest exhibit different courtship behaviors.Which of the following describes the relationship of these birds?

Accepted Answer

A) These birds are the same species because they share morphology. 
B) Mating would be prevented because these birds would not respond to each other's behaviors. 
C) Allopatric speciation is occurring between these birds. 
D) Coevolution is causing these birds to have similar morphology. 
A) These birds are the same species because they share morphology. 
B) Mating would be prevented because these birds would not respond to each other's behaviors. 
C) Allopatric speciation is occurring between these birds. 
D) Coevolution is causing these birds to have similar morphology.

Question 20

In general,geographical isolation occurs when

Accepted Answer

A) populations migrate to new environments. 
B) gene flow is reduced by more than 75 percent due to climate change. 
C) mutations overcome genetic drift across physical barriers. 
D) populations are separated by a distance that is great enough to limit gene flow. 
A) populations migrate to new environments. 
B) gene flow is reduced by more than 75 percent due to climate change. 
C) mutations overcome genetic drift across physical barriers. 
D) populations are separated by a distance that is great enough to limit gene flow.

The formation of a new species

How does coevolution lead to speciation?

Individuals of the same species generally

Which of the following is an example of a postzygotic barrier?

Which of the following is most likely an example of coevolution?

Which of the following must occur for one species to split into two or more species?

In many predator-prey relationships,evolutionary change in the prey will result in evolutionary change in the predator,a phenomenon known as

Match each numbered statement to one of terms listed below. -evolution in one species that leads to reciprocal adaptation in another species

The rough-skinned newt produces one of the most potent toxins on the planet.Scientists in Oregon have found that as newts evolve to produce a more deadly toxin,their primary predator,the garter snake,evolves ways to resist the toxin.This is an example of

Which of the following is an example of a prezygotic barrier that can isolate two species living in the same geographic area?

Two species live near each other but do not respond to each other's courtship displays.This is an example of ________ isolation,a type of prezygotic barrier.

The great diversity of life on Earth is caused by the formation of new species in a process known as ________.

Based on the ________ species concept,organisms that breed asexually are most likely classified as species.

Using reproductive isolation as a method of defining a species is NOT useful for

Which of the following statements gives an example of coevolution?

Adaptive evolution allows species to

Two birds that are very similar in morphology and live in the same forest exhibit different courtship behaviors.Which of the following describes the relationship of these birds?

In general,geographical isolation occurs when

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Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

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Exam 12: Adaptation and Species

The formation of a new species

How does coevolution lead to speciation?

Individuals of the same species generally

Which of the following is an example of a postzygotic barrier?

Which of the following is most likely an example of coevolution?

Which of the following must occur for one species to split into two or more species?

In many predator-prey relationships,evolutionary change in the prey will result in evolutionary change in the predator,a phenomenon known as

Match each numbered statement to one of terms listed below. -evolution in one species that leads to reciprocal adaptation in another species

The rough-skinned newt produces one of the most potent toxins on the planet.Scientists in Oregon have found that as newts evolve to produce a more deadly toxin,their primary predator,the garter snake,evolves ways to resist the toxin.This is an example of

Which of the following is an example of a prezygotic barrier that can isolate two species living in the same geographic area?

Two species live near each other but do not respond to each other's courtship displays.This is an example of ________ isolation,a type of prezygotic barrier.

The great diversity of life on Earth is caused by the formation of new species in a process known as ________.

Based on the ________ species concept,organisms that breed asexually are most likely classified as species.

Using reproductive isolation as a method of defining a species is NOT useful for

Which of the following statements gives an example of coevolution?

Adaptive evolution allows species to

Two birds that are very similar in morphology and live in the same forest exhibit different courtship behaviors.Which of the following describes the relationship of these birds?

In general,geographical isolation occurs when

The Nature of Science

Chemistry of Life

Life Is Cellular

How Cells Work

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

What Genes Are

How Genes Work

Evidence for Evolution

Mechanisms of Evolution

The History of Life

Human Evolution

General Principles of Ecology

Growth of Populations

Communities of Organisms

Ecosystems

Applying the Science

Filters