Question 1

Von Baer proposed that diagnostic traits for distinguishing species among vertebrates appear at the

Accepted Answer

A)  earliest stages of development.
B)  latest stages of development.
C)  earliest and latest stages of development.
D)  middle stages of development.E) A) and B)
F) B) and D)

Question 2

The process in A in the figure above is an example of

Accepted Answer

A)  recapitulation via hypermorphosis.
B)  recapitulation via acceleration.
C)  paedomorphosis via progenesis.
D)  paedomorphosis via neoteny.E) All of the above
F) B) and C)

Question 3

With recapitulation,a somatic trait can appear

Accepted Answer

A)  earlier in development or a reproductive trait later in development.
B)  earlier in development or a reproductive trait earlier in development.
C)  later in development or a reproductive trait later in development.
D)  later in development or a reproductive trait earlier in development.E) None of the above
F) A) and B)

Question 4

Process B in the figure above is an example of

Accepted Answer

A)  recapitulation via hypermorphosis.
B)  recapitulation via acceleration.
C)  paedomorphosis via progenesis.
D)  paedomorphosis via neoteny.E) A) and B)
F) B) and D)

Question 5

Paedomorphosis may involve

Accepted Answer

A)  acceleration or hypermorphosis.
B)  progenesis or neoteny.
C)  acceleration or neoteny.
D)  progenesis or hypermorphosis.E) A) and B)
F) C) and D)

Question 6

By transferring neural crest cells from a duck to a quail and vice versa,Schneider and Helms demonstrated that

Accepted Answer

A)  neural crest cells influence the development of beaks.
B)  beaks influence fitness traits.
C)  homeobox genes are conserved across species.
D)  gene duplication causes a difference in beak shape.E) A) and B)
F) C) and D)

Question 7

A totipotent cell

Accepted Answer

A)  is fixed into a single developmental pathway.
B)  has homeotic transformation.
C)  can differentiate into any adult cell.
D)  will become a stem cell.E) A) and D)
F) A) and B)

Question 8

Based on the figures below,how are transcription factors like a switch?

Accepted Answer

Transcription factors bind to ...

Question 9

How does facultative neoteny in other species support the paedomorph advantage hypothesis for axolotls?

Accepted Answer

Under the paedomorph advantage hypothesi...

Question 10

All fish > Tunicates B) All fish > Lancelets > Tunicates C) Ray finned fishes > Lancelets > Land vertebrates D) All fish > Lancelets > Land vertebrates" class="answers-bank-image d-inline" rel="preload" > The figure above shows the number of Hox gene clusters in different groups of animals.Which of the following is a true statement regarding the number of clusters in each group?

Accepted Answer

A)  Land vertebrates > All fish > Tunicates
B)  All fish > Lancelets > Tunicates
C)  Ray finned fishes > Lancelets > Land vertebrates
D)  All fish > Lancelets > Land vertebratesE) B) and D)
F) A) and B)

Question 11

According to the phylogeny in the figure below,which of the following statements is true?

Accepted Answer

A)  All chordates have a neural tube.
B)  Echinoderms have a neural tube.
C)  Amphioxus have a neural crest.
D)  All chordates have a neural crest.E) A) and B)
F) B) and C)

Question 12

Although many human characters are neotenous compared to a chimpanzee,head growth is not.In the fetus of both species,brain and head growth start at approximately the same developmental stage and progress at the same rate.Soon after birth,chimpanzee brain and head growth stops.Human brain and head growth continues for several years after birth.Thus,relative to head growth,reproduction is occurring at a later stage.Assuming that chimpanzees represent the ancestral condition,explain what type of heterochrony humans have in brain development.

Accepted Answer

Humans are demonstrating hypermorphosis,in that development is continuing beyond the ancestral point.The appearance of reproductive traits is thus retarded as in recapitulation via hypermorphosis.

Question 13

The stage in which in all three groups are least similar is

Accepted Answer

A)  stage 1.
B)  stage 2.
C)  stage 3.
D)  stage 4.E) A) and B)
F) A) and C) D

Question 14

Imagine that a researcher replaced the MADS-box AP1 gene with the MADS-box AG gene.One possible effect on flowers would be

Accepted Answer

A)  stamens would be changed into petals.
B)  petals would be changed in to sepals.
C)  stamens would be changed into carpels.
D)  petals would be changed into stamen-like structures.E) All of the above
F) A) and D)

Question 15

The scala naturae is the

Accepted Answer

A)  view that all of life can be arranged on a single scale from simple to complex.
B)  ontogeny of an individual.
C)  number of vertebrae shared among species.
D)  environmental effect on development.E) A) and B)
F) B) and D) A

Question 16

Which of the following stages is most similar across all three groups?

Accepted Answer

A)  Stage 1
B)  Stage 2
C)  Stage 3
D)  Stage 4E) B) and C)
F) None of the above

Question 17

How can changes in genetic enhancers affect morphology?

Accepted Answer

The gain or loss of enhancers can alter ...

Question 18

Process C in the figure above is an example of

Accepted Answer

A)  recapitulation via hypermorphosis.
B)  recapitulation via acceleration.
C)  paedomorphosis via progenesis.
D)  paedomorphosis via neoteny.E) B) and C)
F) A) and B)

Question 19

Parallelism in development

Accepted Answer

A)  was advocated by von Baer.
B)  was the idea that developmental stages progress from the simple to the complex, reflecting the scala naturae.
C)  refers to the colinearity of Hox genes.
D)  is a method of gene duplication.E) A) and C)
F) A) and B)

Question 20

Does all life evolve from simple to complex? Explain.

Accepted Answer

No.Although all complex life h...

Exam 13: Evolution and Development

Von Baer proposed that diagnostic traits for distinguishing species among vertebrates appear at the

Correct Answer
verified

The process in A in the figure above is an example of

Correct Answer
verified

With recapitulation,a somatic trait can appear

Correct Answer
verified

Process B in the figure above is an example of

Correct Answer
verified

Paedomorphosis may involve

Correct Answer
verified

By transferring neural crest cells from a duck to a quail and vice versa,Schneider and Helms demonstrated that

Correct Answer
verified

A totipotent cell

Correct Answer
verified

Based on the figures below,how are transcription factors like a switch?

Correct Answer
verified
Transcription factors bind to ...
View Answer

How does facultative neoteny in other species support the paedomorph advantage hypothesis for axolotls?

Correct Answer
verified
Under the paedomorph advantage hypothesi...
View Answer

The figure above shows the number of Hox gene clusters in different groups of animals.Which of the following is a true statement regarding the number of clusters in each group?

Correct Answer
verified

According to the phylogeny in the figure below,which of the following statements is true?

Correct Answer
verified

Correct Answer
verified
Humans are demonstrating hypermorphosis,in that development is continuing beyond the ancestral point.The appearance of reproductive traits is thus retarded as in recapitulation via hypermorphosis.

The stage in which in all three groups are least similar is

Correct Answer
verified
D

Imagine that a researcher replaced the MADS-box AP1 gene with the MADS-box AG gene.One possible effect on flowers would be

Correct Answer
verified

The scala naturae is the

Correct Answer
verified
A

Which of the following stages is most similar across all three groups?

Correct Answer
verified

How can changes in genetic enhancers affect morphology?

Correct Answer
verified
The gain or loss of enhancers can alter ...
View Answer

Process C in the figure above is an example of

Correct Answer
verified

Parallelism in development

Correct Answer
verified

Does all life evolve from simple to complex? Explain.

Correct Answer
verified
No.Although all complex life h...
View Answer

Exam 13: Evolution and Development

Von Baer proposed that diagnostic traits for distinguishing species among vertebrates appear at the

Correct AnswerverifiedShow Answer

The process in A in the figure above is an example of

Correct AnswerverifiedShow Answer

With recapitulation,a somatic trait can appear

Correct AnswerverifiedShow Answer

Process B in the figure above is an example of

Correct AnswerverifiedShow Answer

Paedomorphosis may involve

Correct AnswerverifiedShow Answer

By transferring neural crest cells from a duck to a quail and vice versa,Schneider and Helms demonstrated that

Correct AnswerverifiedShow Answer

A totipotent cell

Correct AnswerverifiedShow Answer

Based on the figures below,how are transcription factors like a switch?

Correct AnswerverifiedTranscription factors bind to ...View AnswerShow Answer

How does facultative neoteny in other species support the paedomorph advantage hypothesis for axolotls?

Correct AnswerverifiedUnder the paedomorph advantage hypothesi...View AnswerShow Answer

The figure above shows the number of Hox gene clusters in different groups of animals.Which of the following is a true statement regarding the number of clusters in each group?

Correct AnswerverifiedShow Answer

According to the phylogeny in the figure below,which of the following statements is true?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedHumans are demonstrating hypermorphosis,in that development is continuing beyond the ancestral point.The appearance of reproductive traits is thus retarded as in recapitulation via hypermorphosis.

The stage in which in all three groups are least similar is

Correct AnswerverifiedD

Imagine that a researcher replaced the MADS-box AP1 gene with the MADS-box AG gene.One possible effect on flowers would be

Correct AnswerverifiedShow Answer

The scala naturae is the

Correct AnswerverifiedA

Which of the following stages is most similar across all three groups?

Correct AnswerverifiedShow Answer

How can changes in genetic enhancers affect morphology?

Correct AnswerverifiedThe gain or loss of enhancers can alter ...View AnswerShow Answer

Process C in the figure above is an example of

Correct AnswerverifiedShow Answer

Parallelism in development

Correct AnswerverifiedShow Answer

Does all life evolve from simple to complex? Explain.

Correct AnswerverifiedNo.Although all complex life h...View AnswerShow Answer

Correct Answer
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Correct Answer
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Correct Answer
verified

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
verified
Transcription factors bind to ...
View Answer

Correct Answer
verified
Under the paedomorph advantage hypothesi...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Humans are demonstrating hypermorphosis,in that development is continuing beyond the ancestral point.The appearance of reproductive traits is thus retarded as in recapitulation via hypermorphosis.

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
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Correct Answer
verified
The gain or loss of enhancers can alter ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
No.Although all complex life h...
View Answer