Question 1

The rate of speciation is generally uniform.

Accepted Answer

A) True 
 B)False

Question 2

According to the biological species concept,which of the following is true?

Accepted Answer

A) It relies on traits to define a species. 
B) It recognizes that every species has an evolutionary history. 
C) It can only be applied to prokaryotes. 
D) It can only be applied to asexually reproducing species. 
E) It relies primarily on reproductive isolation. 
A) It relies on traits to define a species. 
B) It recognizes that every species has an evolutionary history. 
C) It can only be applied to prokaryotes. 
D) It can only be applied to asexually reproducing species. 
E) It relies primarily on reproductive isolation.

Question 3

Fossils from the Burgess Shale date back to approximately

Accepted Answer

A) 50 million years ago. 
B) 130 million years ago. 
C) 320 million years ago. 
D) 410 million years ago. 
E) 540 million years ago. 
A) 50 million years ago. 
B) 130 million years ago. 
C) 320 million years ago. 
D) 410 million years ago. 
E) 540 million years ago.

Question 4

The model of speciation that requires some time with geographic barriers between two populations allowing evolution of reproductive isolation is

Accepted Answer

A) allopatric speciation. 
B) habitat speciation. 
C) sympatric speciation. 
D) temporal speciation. 
E) behavioral speciation. 
A) allopatric speciation. 
B) habitat speciation. 
C) sympatric speciation. 
D) temporal speciation. 
E) behavioral speciation.

Question 5

A study of how different courtship patterns lead to reproductive isolation is a study of what?

Accepted Answer

A) habitat isolation 
B) mechanical isolation 
C) gamete isolation 
D) behavioral isolation 
E) temporal isolation 
A) habitat isolation 
B) mechanical isolation 
C) gamete isolation 
D) behavioral isolation 
E) temporal isolation

Question 6

When two species live in the same area but are active at different times of the day or year it is referred to as

Accepted Answer

A) genetic isolation. 
B) mechanical isolation. 
C) behavioral isolation. 
D) habitat isolation. 
E) temporal isolation. 
A) genetic isolation. 
B) mechanical isolation. 
C) behavioral isolation. 
D) habitat isolation. 
E) temporal isolation.

Question 7

-This figure shows various reproductive barriers which prevent the interbreeding of different species.What does "d" represent?

Accepted Answer

A) gamete isolation 
B) temporal isolation 
C) hybrid sterility 
D) postzygotic isolation mechanisms 
E) prezygotic isolation mechanisms 
A) gamete isolation 
B) temporal isolation 
C) hybrid sterility 
D) postzygotic isolation mechanisms 
E) prezygotic isolation mechanisms

Question 8

If you were a biologist studying the Pax6 gene in an organism,which of the following structures would you be studying?

Accepted Answer

A) the overall body shape 
B) the eye 
C) the pelvic fin 
D) the vertebrae 
E) the limbs 
A) the overall body shape 
B) the eye 
C) the pelvic fin 
D) the vertebrae 
E) the limbs

Question 9

-This figure shows various reproductive barriers which prevent the interbreeding of different species.What does "b" represent?

Accepted Answer

A) gamete isolation 
B) temporal isolation 
C) hybrid sterility 
D) postzygotic isolation mechanisms 
E) prezygotic isolation mechanisms 
A) gamete isolation 
B) temporal isolation 
C) hybrid sterility 
D) postzygotic isolation mechanisms 
E) prezygotic isolation mechanisms

Question 10

During the beginning stages of allopatric speciation

Accepted Answer

A) gene flow continues between subpopulations. 
B) reproduction between the two species continues. 
C) a geographic separation occurs between the subpopulations. 
D) wide phenotypic differences appear between the subpopulations. 
E) geographic isolation has not occurred. 
A) gene flow continues between subpopulations. 
B) reproduction between the two species continues. 
C) a geographic separation occurs between the subpopulations. 
D) wide phenotypic differences appear between the subpopulations. 
E) geographic isolation has not occurred.

Question 11

Two bird species could be temporally isolated by one's being nocturnal and the other's being diurnal.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following genes is important in the development of limb buds?

Accepted Answer

A) Tbx5 
B) Evo9 
C) Pax6 
D) Hox 
E) Pax2 
A) Tbx5 
B) Evo9 
C) Pax6 
D) Hox 
E) Pax2

Question 13

Modern corn is considered an allotetraploid,which means

Accepted Answer

A) the offspring contain half the number of chromosomes as the parent plant. 
B) the offspring contain double the number of chromosomes as the parent plant. 
C) a doubling of chromosomes has occurred during hybridization. 
D) a halving of chromosomes during has occurred hybridization. 
E) the number of chromosomes is highly variable from generation to generation. 
A) the offspring contain half the number of chromosomes as the parent plant. 
B) the offspring contain double the number of chromosomes as the parent plant. 
C) a doubling of chromosomes has occurred during hybridization. 
D) a halving of chromosomes during has occurred hybridization. 
E) the number of chromosomes is highly variable from generation to generation.

Question 14

If you were studying postzygotic isolation mechanisms,which of the following would you be studying?

Accepted Answer

A) mechanical isolation 
B) temporal isolation 
C) behavioral isolation 
D) habitat isolation 
E) hybrid sterility 
A) mechanical isolation 
B) temporal isolation 
C) behavioral isolation 
D) habitat isolation 
E) hybrid sterility

Question 15

Suppose that two groups of humans became completely isolated from one another for a very long period of time due to a geographic barrier and that each group had very different environmental conditions with which to contend.What might be true?

Accepted Answer

A) Gene flow would occur between the two populations. 
B) Speciation could occur,since the human species already exists. 
C) The scenario described is an example of sympatric speciation. 
D) The two populations would be subject to identical selective pressures. 
E) If speciation occurred,reproductive isolation would necessarily end if the two species later inhabited the same area. 
A) Gene flow would occur between the two populations. 
B) Speciation could occur,since the human species already exists. 
C) The scenario described is an example of sympatric speciation. 
D) The two populations would be subject to identical selective pressures. 
E) If speciation occurred,reproductive isolation would necessarily end if the two species later inhabited the same area.

Question 16

During the later stages of allopatric speciation

Accepted Answer

A) evolution ceases for a time. 
B) reproductive isolation between the subpopulations occurs. 
C) wide phenotypic differences disappear between subpopulations. 
D) gene flow continues between the two populations. 
E) reproduction continues between the two populations. 
A) evolution ceases for a time. 
B) reproductive isolation between the subpopulations occurs. 
C) wide phenotypic differences disappear between subpopulations. 
D) gene flow continues between the two populations. 
E) reproduction continues between the two populations.

Question 17

Which of these statements is true for something other than autoploidy?

Accepted Answer

A) It is how a clone is produced. 
B) A diploid gamete fuses with a haploid gamete. 
C) The result is triploid. 
D) The offspring is sterile. 
E) It occurs in plants. 
A) It is how a clone is produced. 
B) A diploid gamete fuses with a haploid gamete. 
C) The result is triploid. 
D) The offspring is sterile. 
E) It occurs in plants.

Question 18

Which of the following statements about differential gene expression is true?

Accepted Answer

A) It would leave unchanged the size of a particular structure. 
B) It might maintain the function of an organ. 
C) It could identically color skin. 
D) It might change leg length between species. 
E) It might cause a species to grow as long as another. 
A) It would leave unchanged the size of a particular structure. 
B) It might maintain the function of an organ. 
C) It could identically color skin. 
D) It might change leg length between species. 
E) It might cause a species to grow as long as another.

Question 19

When animal genitalia or plant floral structures are incompatible between species it is referred to as

Accepted Answer

A) genetic isolation. 
B) mechanical isolation. 
C) behavioral isolation. 
D) habitat isolation. 
E) temporal isolation. 
A) genetic isolation. 
B) mechanical isolation. 
C) behavioral isolation. 
D) habitat isolation. 
E) temporal isolation.

Question 20

The model of speciation that states evolution has long periods of no change followed by brief periods of rapid change is referred to as the

Accepted Answer

A) sympatric model. 
B) allopatric model. 
C) punctuated equilibrium model. 
D) microevolution model. 
E) gradualistic model. 
A) sympatric model. 
B) allopatric model. 
C) punctuated equilibrium model. 
D) microevolution model. 
E) gradualistic model.

Exam 15: Speciation and Evolution

The rate of speciation is generally uniform.

According to the biological species concept,which of the following is true?

Fossils from the Burgess Shale date back to approximately

The model of speciation that requires some time with geographic barriers between two populations allowing evolution of reproductive isolation is

A study of how different courtship patterns lead to reproductive isolation is a study of what?

When two species live in the same area but are active at different times of the day or year it is referred to as

-This figure shows various reproductive barriers which prevent the interbreeding of different species.What does "d" represent?

If you were a biologist studying the Pax6 gene in an organism,which of the following structures would you be studying?

-This figure shows various reproductive barriers which prevent the interbreeding of different species.What does "b" represent?

During the beginning stages of allopatric speciation

Two bird species could be temporally isolated by one's being nocturnal and the other's being diurnal.

Which of the following genes is important in the development of limb buds?

Modern corn is considered an allotetraploid,which means

If you were studying postzygotic isolation mechanisms,which of the following would you be studying?

Suppose that two groups of humans became completely isolated from one another for a very long period of time due to a geographic barrier and that each group had very different environmental conditions with which to contend.What might be true?

During the later stages of allopatric speciation

Which of these statements is true for something other than autoploidy?

Which of the following statements about differential gene expression is true?

When animal genitalia or plant floral structures are incompatible between species it is referred to as

The model of speciation that states evolution has long periods of no change followed by brief periods of rapid change is referred to as the

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Organic Molecules of Cells

Structure and Function of Cells

Dynamic Activities of Cells

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Molecular Biology of Inheritance

Regulation of Gene Activity

Biotechnology and Genomics

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Evolution of Microbial Life

Evolution of Protists

Evolution of Plants and Fungi

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Evolution of Humans

Plant Organization and Homeostasis

Transport and Nutrition in Plants

Control of Growth Responses in Plants

Reproduction in Plants

Animal Organization and Homeostasis

Coordination by Neural Signaling

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Locomotion and Support Systems

Circulation and Cardiovascular Systems

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Digestive Systems and Nutrition

Gas Exchange and Transport in Animals

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Coordination by Hormone Signaling

Reproduction and Development

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Major Ecosystems of the Biosphere

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