Exam 50: Animal Development

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List and briefly describe the four stages of whole-cell migration.

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In the first stage, the front and back ends of a cell becomes defined by a polarization process. In the second stage, the front end of the cell protrudes as actin microfilaments assemble into long, parallel bundles. In the third stage, the cell adheres to the surrounding extracellular matrix. In the fourth stage, adhesion at the rear end of the cell is released, and the cell migrates forward and adheres to a new attachment point.

Match each term to its appropriate definition.
Premises:
blastopore
Responses:
Early structure formed during nervous system development
An opening that eventually becomes the anus or mouth
A solid ball of blastomeres
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Verified
Premises:
Responses:
blastopore
Early structure formed during nervous system development
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   Answer the questions using the accompanying figure. Label the structures in a developing bird embryo with the appropriate term.
Answer the questions using the accompanying figure. Label the structures in a developing bird embryo with the appropriate term.
Premises:
amniotic cavity
Responses:
C
E
B
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Premises:
Responses:
amniotic cavity
C
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Compared to other mammals, the human brain is unique with respect to its ____.

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How does the amount of yolk relate to the nourishment of the organism?

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The correct sequence of embryonic development is ____.

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The lining of the mouth and anus originate from the ____, while the lining of the respiratory tract originates from the ____.

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Cells capable of producing all the various types of cells of the adult are called ____ cells.

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As cleavage divisions continue, the ball or layer hollows out to form the ____.

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As embryonic cells divide during cleavage, the daughter cells ____.

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At the cellular level, the development of an adult animal from a fertilized egg involves ____.

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Whole-cell movements involve the coordinated activity of ____.

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Which group of adult tissues is derived from the mesoderm?

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During gastrulation in frog embryos, cells migrate into the blastopore by a process called ____.

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After childbirth, ____ in the mother.

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At the cellular level, the development of an animal from a fertilized egg involves cell division by _____.

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In bird embryos, the pathway for cell migration into the blastocoel is formed by the ____, while in frog embryos, the pathway for cell migration into the blastopore is formed by the ____.

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Eggs from which organism contain the lowest percentage of yolk?

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Match each term to its appropriate definition.
Premises:
cleavage
Responses:
Early structure formed during nervous system development
Series of mitotic divisions in which cycles of DNA replication and division occur without the production of new cytoplasm
A fluid filled cavity within the blastula
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Premises:
Responses:
cleavage
Early structure formed during nervous system development
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Which event occurs in a human fetus with the XX combination of sex chromosomes?

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