Question 1

Two species of the garter snake in the genus Thamnophis are found in the same geographic region.These species are not likely to meet and attempt to reproduce because one lives mainly in the water,while the other species spends most of its time on land.This is known as

Accepted Answer

A)  behavioral isolation.
B)  habitat isolation.
C)  temporal isolation.
D)  zygote mortality.E) C) and D)
F) None of the above

Question 2

The biological species concept is limited,and may not be applied to

Accepted Answer

A)  asexually reproducing organisms.
B)  organisms known only in the fossil record.
C)  species that could possibly interbreed if they lived near one another.
D)  All of the above.E) None of the above
F) All of the above

Question 3

The ______________ was proposed to help explain speciation that appears in the fossil record.

Accepted Answer

A)  evolutionary species concept
B)  morphological species concept
C)  phylogenetic species concept
D)  genetic divergence species conceptE) A) and B)
F) All of the above

Question 4

The process in which natural selection favors the continual development of prezygotic isolating mechanisms is called

Accepted Answer

A)  disruptive selection.
B)  sympatric speciation.
C)  mutation.
D)  reinforcement.E) A) and C)
F) C) and D)

Question 5

________ prevent hybrid offspring from developing or if the hybrid is born,it is infertile.

Accepted Answer

A)  Prezygotic reproductive isolating mechanisms
B)  Temporal isolation mechanisms
C)  Postzygotic isolating mechanisms
D)  Two of these are correct.
E)  None of the above.F) A) and B)
G) A) and C)

Question 6

Plant species A has a diploid number of 28 chromosomes,while Plant species B has a diploid number of 14 chromosomes.Species A and B produce a hybrid through alloploidy.The diploid number of chromosomes of the hybrid is

Accepted Answer

A)  28.
B)  14.
C)  42.
D)  21.E) A) and C)
F) All of the above

Question 7

When a diploid plant produces diploid gametes due to nondisjunction during meiosis,what occurs?

Accepted Answer

A)  Autoploidy is occurring.
B)  An increase in the number of chromosomes above the parent species occurs.
C)  A triploid or tetraploid plant may occur.
D)  All of the above are true.E) B) and C)
F) None of the above

Question 8

The Greek root words meaning "together" and "fatherland" are the basis for the term

Accepted Answer

A)  prezygotic.
B)  adaptive radiation.
C)  speciation.
D)  allopatric.
E)  sympatric.F) B) and E)
G) B) and D)

Question 9

A major disadvantage of the evolutionary species concept is that it

Accepted Answer

A)  relies primarily on reproductive isolation to identify species.
B)  applies to both sexually and asexually reproducing species.
C)  uses morphological traits to distinguish species.
D)  is the same as the classic biological species concept.E) B) and C)
F) All of the above

Question 10

What type of speciation requires a geographic barrier?

Accepted Answer

A)  sympatric speciation
B)  allopatric speciation
C)  both sympatric and allopatric speciation require a geographic barrier
D)  neither sympatric or allopatric speciation require a geographic barrierE) A) and D)
F) B) and D)

Question 11

A cross between a male horse and a female donkey produces a mule.Mules are an example of

Accepted Answer

A)  hybrid infertility.
B)  temporal isolation.
C)  gametic isolation.
D)  zygote mortality.E) B) and D)
F) A) and D)

Question 12

The history of life on Earth can be studied by looking at ___________ instead of _________.

Accepted Answer

A)  macroevolution,microevolution
B)  microevolution,macroevolution
C)  sexual selection,macroevolution
D)  gene flow,microevolutionE) A) and B)
F) B) and C)

Question 13

Adaptive radiation occurs when organisms

Accepted Answer

A)  exploit a variety of new environments.
B)  remain in the same,stable environment.
C)  undergo autoploidy and alloploidy.
D)  occupy the same habitat as their ancestral species.E) None of the above
F) A) and D)

Exam 17: Speciation and Macroevolution

A cross between a male horse and a female donkey produces a mule.Mules are an example of

Correct Answer
verified

What type of speciation requires a geographic barrier?

Correct Answer
verified

A major disadvantage of the evolutionary species concept is that it

Correct Answer
verified

When a diploid plant produces diploid gametes due to nondisjunction during meiosis,what occurs?

Correct Answer
verified

The biological species concept is limited,and may not be applied to

Correct Answer
verified

________ prevent hybrid offspring from developing or if the hybrid is born,it is infertile.

Correct Answer
verified

Adaptive radiation occurs when organisms

Correct Answer
verified

The history of life on Earth can be studied by looking at ___ instead of _.

Correct Answer
verified

The Greek root words meaning "together" and "fatherland" are the basis for the term

Correct Answer
verified

Two species of the garter snake in the genus Thamnophis are found in the same geographic region.These species are not likely to meet and attempt to reproduce because one lives mainly in the water,while the other species spends most of its time on land.This is known as

Correct Answer
verified

Plant species A has a diploid number of 28 chromosomes,while Plant species B has a diploid number of 14 chromosomes.Species A and B produce a hybrid through alloploidy.The diploid number of chromosomes of the hybrid is

Correct Answer
verified

The process in which natural selection favors the continual development of prezygotic isolating mechanisms is called

Correct Answer
verified

The ______________ was proposed to help explain speciation that appears in the fossil record.

Correct Answer
verified

Exam 17: Speciation and Macroevolution

A cross between a male horse and a female donkey produces a mule.Mules are an example of

Correct AnswerverifiedShow Answer

What type of speciation requires a geographic barrier?

Correct AnswerverifiedShow Answer

A major disadvantage of the evolutionary species concept is that it

Correct AnswerverifiedShow Answer

When a diploid plant produces diploid gametes due to nondisjunction during meiosis,what occurs?

Correct AnswerverifiedShow Answer

The biological species concept is limited,and may not be applied to

Correct AnswerverifiedShow Answer

________ prevent hybrid offspring from developing or if the hybrid is born,it is infertile.

Correct AnswerverifiedShow Answer

Adaptive radiation occurs when organisms

Correct AnswerverifiedShow Answer

The history of life on Earth can be studied by looking at ___________ instead of _________.

Correct AnswerverifiedShow Answer

The Greek root words meaning "together" and "fatherland" are the basis for the term

Correct AnswerverifiedShow Answer

Two species of the garter snake in the genus Thamnophis are found in the same geographic region.These species are not likely to meet and attempt to reproduce because one lives mainly in the water,while the other species spends most of its time on land.This is known as

Correct AnswerverifiedShow Answer

Plant species A has a diploid number of 28 chromosomes,while Plant species B has a diploid number of 14 chromosomes.Species A and B produce a hybrid through alloploidy.The diploid number of chromosomes of the hybrid is

Correct AnswerverifiedShow Answer

The process in which natural selection favors the continual development of prezygotic isolating mechanisms is called

Correct AnswerverifiedShow Answer

The ______________ was proposed to help explain speciation that appears in the fossil record.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The history of life on Earth can be studied by looking at ___ instead of _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified