Question 1

Morphological traits are commonly used to identify species, which of the following can also be used?

Accepted Answer

A)   The ability to interbreed.
B)   Molecular similarity (DNA and chromosome comparisons) .
C)   Ecological factors.
D)   Evolutionary relationships.
E)   All of these.F) None of the above
G) B) and E)

Question 2

Which of the following could possibly account for an increase in Hox genes and an increase in animal body complexity?

Accepted Answer

A)   Different Hox genes are expressed in different regions of the body.
B)   Hox genes duplicated once during animal evolution.
C)   Duplication of Hox genes and duplication of Hox gene clusters throughout animal evolution.
D)   Inversion of Hox genes about 600 million years ago.
E)   The creation of Hox gene clusters through inversion and uncontrolled replication.F) A) and C)
G) C) and E)

Question 3

Reproductive isolation in Darwin's finches was studied by Podos. He measured beak size and found a correlation between this and the finches'

Accepted Answer

A)   song.
B)   possible ability to attract certain mates.
C)   flight patterns.
D)   song and possible ability to attract certain mates are correct.
E)   song, flight patterns and beak depth.F) A) and D)
G) B) and C)

Question 4

The Pax6 gene

Accepted Answer

A)   is a master control gene for eye development.
B)   codes for a protein that controls the expression of many other genes.
C)   mutant can cause aniridia in humans.
D)   is a homolog to the eyeless gene in Drosophila.
E)   All of the choices are correct.F) None of the above
G) C) and D)

Question 5

What is the name of the field of biology that compares the development of different organisms in an attempt to understand ancestral relationships between organisms and the developmental mechanisms that bring about evolutionary change?

Accepted Answer

A)   Pattern formation.
B)   Punctuated equlibrium.
C)   Cell biology.
D)   Evolutionary developmental biology.
E)   Endocrine biology.F) C) and D)
G) A) and E)

Question 6

Speciation can arise through abrupt events, such as changes in chromosome number or as consequence  of adaptation to different ecological niches. What is the term for the splitting or  Figure A Figure B diverging of a population into two or more species and which figure (above)  is best associated with this term?

Accepted Answer

A)   Anagenesis; Figure A.
B)   Anagenesis; Figure B.
C)   Cladogenesis; Figure A.
D)   Cladogenesis; Figure B.
E)   Cladogenesis; Both Figure A and B can represent this type of splitting.F) A) and B)
G) All of the above

Question 7

The pace of evolution may change due to sudden environmental shifts such as climate change. This may result in rapid evolution.

Accepted Answer

A) True 
 B)False

Question 8

Genetic changes, under control of the Paax6 gene, led to

Accepted Answer

A)   the evolution of one type of eye.
B)   one photoreceptor in each modern eye.
C)   the evolution of many types of eyes using ommatidia and simple eye structures.
D)   a cluster of photoreceptor cells in every eye.
E)   none of these are correctF) A) and D)
G) None of the above

Question 9

A disadvantage of the phylogenetic species concept is that it

Accepted Answer

A)   cannot be applied to all organisms.
B)   cannot be used for molecular data.
C)   may be difficult to determine the number of traits necessary to characterize individuals.
D)   cannot accommodate clear-cut qualitative characteristics.
E)   is impossible to determine reproductive isolation.F) All of the above
G) C) and D)

Question 10

Development of an animal is connected to the genes that are expressed during development. Researchers propose that ...

Accepted Answer

A)   increases in the number of Hox genes have been instrumental in the evolution of many animal species.
B)   the greater the number of Hox genes the more complex the body plan of the animal.
C)   both BMP4 and Hox are associated only with digit development in animals.
D)   increases in the number of Hox genes have been instrumental in the evolution of many animal . species and the greater the number of Hox genes the more complex the body plan of the animal are both correct.
E)   increases in the number of Hox genes have been instrumental in the evolution of many animal . species, the greater the number of Hox genes the more complex the body plan of the animal, and both BMP4 and Hox are associated only with digit development in animals are all correct.F) B) and E)
G) B) and D) D

Question 11

In comparing the development of the unwebbed foot of the chicken and webbed foot of a duck

Accepted Answer

A)   BMP4 is expressed in the foot of a chicken and gremlin in the foot of a duck.
B)   BMP4 and gremlin are expressed in both chickens and ducks, but gremlin is expressed throughout . the duck leg and not expressed between the toes of chickens.
C)   BMP4 is expressed in the foot of a duck and gremlin in the foot of a chicken.
D)   BMP4 is expressed between the toes of a chicken and gremlin between the toes of a duck.
E)   BMP4 is not expressed in the chicken but is in the duck.F) A) and E)
G) All of the above B

Question 12

Species evolve continuously over long spans of time according to the concept of

Accepted Answer

A)   punctuated equilibrium.
B)   gradualism.
C)   developmental evolution.
D)   anagenesis.
E)   sexual selection.F) D) and E)
G) B) and E)

Question 13

Adaptive radiation could resulted in which of the following?

Accepted Answer

A)   Many ancestral species evolve into one of descendant species that differ greatly in habitat, form and . behavior from the ancestral species.
B)   The evolution of the horse which depended on the change in food supply.
C)   The abundant species of Hawaiian honeycreepers.
D)   The 1,000 species of Drosophila found dispersed throughout the Hawaiian Islands.
E)   The abundant species of Hawaiian honeycreepers and Drosophila found on the Hawaiian Islands.F) A) and B)
G) A) and E)

Question 14

A population of mountain goats are split because of the formation of a glacier. After 50 years the glacier melts and the population reunites. Hybrid zones may occur if

Accepted Answer

A)   both pre-mating and post-mating isolating mechanisms occur.
B)   reproductive isolation is incomplete.
C)   a geographic barrier is removed after reproductive isolation is complete.
D)   both pre-mating and post-mating isolating mechanism occur and reproductive isolation is complete.
E)   both pre-mating and post-mating isolating mechanisms occur and a geographic barrier is removed after reproductive isolation is complete are correct.F) B) and C)
G) All of the above

Question 15

De Queiroz's general species concept is receiving significant support because

Accepted Answer

A)   it includes morphology, reproductive isolation, DNA sequences and ecology to determine if a population of group of populations is distinct form other groups.
B)   multiple criteria are used.
C)   many scientists believe it is not valid to have so many different species concepts.
D)   it concurs with evolutionary lineage concept.
E)   all of the above are correct.F) B) and E)
G) D) and E)

Question 16

Studies of the Pax6 and homologues suggest that the

Accepted Answer

A)   eye has evolved independently multiple times.
B)   eyes of many different species are descended from a common ancestor.
C)   master gene of the eye in various species is not homologous.
D)   eye has evolved independently multiple times and master gene of the eye in various species is not homologous are correct.
E)   eyes of insects, like Drosophila, derived many times from many ancestors.F) A) and B)
G) A) and E)

Question 17

The process of evolutionary changes that result in formation of new species and groups of species is called

Accepted Answer

A)   temporal evolution.
B)   artificial selection.
C)   macroevolution.
D)   serial evolution.
E)   a combination of temporal and serial evolution.F) A) and B)
G) A) and C)

Question 18

The phenomenon in which one region of the body grows faster than another among different species is called...

Accepted Answer

A)   paedomorphosis.
B)   Gremlin and BMP4 interaction.
C)   Hox gene translation.
D)   meroblastic cleavage.
E)   heterochrony.F) A) and D)
G) None of the above

Question 19

Which of the following would most likely undergo the fastest rate of evolutionary change?

Accepted Answer

A)   an annual plant
B)   a blue whale
C)   a human
D)   a giant sequoia tree
E)   bacteriaF) C) and E)
G) C) and D) E

Question 20

Accepted Answer

A)   The human and chimp fetal skull are exactly the same, the human jaw development slows down after adulthood.
B)   Heterochrony is occurring, the chimp jaws continue to develop at a faster rate than human jaws.
C)   Paedomorphosis is occurring, the human jaw retains its small size while the chimp jaw continues to grow even in adulthood.
D)   The nasal passages of the chimp are shortened due to reduced growth during fetal development . while the nasal passages of the human grow through adulthood.
E)   All of the choices are correct.F) D) and E)
G) All of the above

Exam 25: Origin of Species and Macroevolution

Morphological traits are commonly used to identify species, which of the following can also be used?

Correct Answer
verified

Which of the following could possibly account for an increase in Hox genes and an increase in animal body complexity?

Correct Answer
verified

Reproductive isolation in Darwin's finches was studied by Podos. He measured beak size and found a correlation between this and the finches'

Correct Answer
verified

The Pax6 gene

Correct Answer
verified

What is the name of the field of biology that compares the development of different organisms in an attempt to understand ancestral relationships between organisms and the developmental mechanisms that bring about evolutionary change?

Correct Answer
verified

Correct Answer
verified

The pace of evolution may change due to sudden environmental shifts such as climate change. This may result in rapid evolution.

Correct Answer
verified

Genetic changes, under control of the Paax6 gene, led to

Correct Answer
verified

A disadvantage of the phylogenetic species concept is that it

Correct Answer
verified

Development of an animal is connected to the genes that are expressed during development. Researchers propose that ...

Correct Answer
verified
D

In comparing the development of the unwebbed foot of the chicken and webbed foot of a duck

Correct Answer
verified
B

Species evolve continuously over long spans of time according to the concept of

Correct Answer
verified

Adaptive radiation could resulted in which of the following?

Correct Answer
verified

A population of mountain goats are split because of the formation of a glacier. After 50 years the glacier melts and the population reunites. Hybrid zones may occur if

Correct Answer
verified

De Queiroz's general species concept is receiving significant support because

Correct Answer
verified

Studies of the Pax6 and homologues suggest that the

Correct Answer
verified

The process of evolutionary changes that result in formation of new species and groups of species is called

Correct Answer
verified

The phenomenon in which one region of the body grows faster than another among different species is called...

Correct Answer
verified

Which of the following would most likely undergo the fastest rate of evolutionary change?

Correct Answer
verified
E

Correct Answer
verified

Exam 25: Origin of Species and Macroevolution

Morphological traits are commonly used to identify species, which of the following can also be used?

Correct AnswerverifiedShow Answer

Which of the following could possibly account for an increase in Hox genes and an increase in animal body complexity?

Correct AnswerverifiedShow Answer

Reproductive isolation in Darwin's finches was studied by Podos. He measured beak size and found a correlation between this and the finches'

Correct AnswerverifiedShow Answer

The Pax6 gene

Correct AnswerverifiedShow Answer

What is the name of the field of biology that compares the development of different organisms in an attempt to understand ancestral relationships between organisms and the developmental mechanisms that bring about evolutionary change?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The pace of evolution may change due to sudden environmental shifts such as climate change. This may result in rapid evolution.

Correct AnswerverifiedShow Answer

Genetic changes, under control of the Paax6 gene, led to

Correct AnswerverifiedShow Answer

A disadvantage of the phylogenetic species concept is that it

Correct AnswerverifiedShow Answer

Development of an animal is connected to the genes that are expressed during development. Researchers propose that ...

Correct AnswerverifiedD

In comparing the development of the unwebbed foot of the chicken and webbed foot of a duck

Correct AnswerverifiedB

Species evolve continuously over long spans of time according to the concept of

Correct AnswerverifiedShow Answer

Adaptive radiation could resulted in which of the following?

Correct AnswerverifiedShow Answer

A population of mountain goats are split because of the formation of a glacier. After 50 years the glacier melts and the population reunites. Hybrid zones may occur if

Correct AnswerverifiedShow Answer

De Queiroz's general species concept is receiving significant support because

Correct AnswerverifiedShow Answer

Studies of the Pax6 and homologues suggest that the

Correct AnswerverifiedShow Answer

The process of evolutionary changes that result in formation of new species and groups of species is called

Correct AnswerverifiedShow Answer

The phenomenon in which one region of the body grows faster than another among different species is called...

Correct AnswerverifiedShow Answer

Which of the following would most likely undergo the fastest rate of evolutionary change?

Correct AnswerverifiedE

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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D

Correct Answer
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B

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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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E

Correct Answer
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