Question 1

The presence of an SRY sequence in a mammalian genome causes the degradation of which of these structures?

Accepted Answer

A)  Wolffian duct 
B)  Vas deferens 
C)  Sertoli cells 
D)  Müllerian duct 
A)  Wolffian duct 
B)  Vas deferens 
C)  Sertoli cells 
D)  Müllerian duct D

Question 2

Which ion controls the slow block to polyspermy?

Accepted Answer

A)  Sodium 
B)  Calcium 
C)  Potassium 
D)  Chloride 
A)  Sodium 
B)  Calcium 
C)  Potassium 
D)  Chloride B

Question 3

Which of the options given represents the pathway of primordial germ-cell migration in the mouse embryo?

Accepted Answer

A)  Hindgut - dorsal mesentery - primitive streak - genital ridge 
B)  Primitive streak - hindgut - dorsal mesentery - genital ridge 
C)  Dorsal mesentery - hindgut - primitive streak - genital ridge 
D)  Primitive streak - dorsal mesentery - hindgut - genital ridge 
A)  Hindgut - dorsal mesentery - primitive streak - genital ridge 
B)  Primitive streak - hindgut - dorsal mesentery - genital ridge 
C)  Dorsal mesentery - hindgut - primitive streak - genital ridge 
D)  Primitive streak - dorsal mesentery - hindgut - genital ridge B

Question 4

What is the name of the Golgi-derived vesicle located in the head of sperm that aids in its penetration of the egg?

Accepted Answer

A)  Cortical granule 
B)  Zona pellucida 
C)  Acrosome 
D)  Cumulus 
A)  Cortical granule 
B)  Zona pellucida 
C)  Acrosome 
D)  Cumulus

Question 5

Which type of embryo is formed from the activation of an unfertilized egg?

Accepted Answer

A)  Androgenetic 
B)  Gynogenetic 
C)  Parthenogenetic 
D)  Epigenetic 
A)  Androgenetic 
B)  Gynogenetic 
C)  Parthenogenetic 
D)  Epigenetic

Question 6

Which of the options given is not true of Drosophila germ-line development?

Accepted Answer

A)  Germ-line development begins in the anterior region of the egg 
B)  Germ cells are derived from pole cells. 
C)  Shifting the position of pole plasm shifts the position of germ cell specification 
D)  Germ cells are specified by inheriting cytoplasmic determinants 
A)  Germ-line development begins in the anterior region of the egg 
B)  Germ cells are derived from pole cells. 
C)  Shifting the position of pole plasm shifts the position of germ cell specification 
D)  Germ cells are specified by inheriting cytoplasmic determinants

Question 7

What is the name of the Golgi-derived vesicle located under the plasma membrane of an egg to block polyspermy?

Accepted Answer

A)  Cortical granule 
B)  Zona pellucida 
C)  Acrosome 
D)  Cumulus 
A)  Cortical granule 
B)  Zona pellucida 
C)  Acrosome 
D)  Cumulus

Question 8

Which of the options given is true of mammalian oogenesis?

Accepted Answer

A)  Meiosis gives rise to four daughter cells of equal size 
B)  Meiosis is complete only occurs after fertilization 
C)  Meiosis gives rise to four genetically identical daughter cells 
D)  Meiosis is completed while the female is an embryo 
A)  Meiosis gives rise to four daughter cells of equal size 
B)  Meiosis is complete only occurs after fertilization 
C)  Meiosis gives rise to four genetically identical daughter cells 
D)  Meiosis is completed while the female is an embryo

Question 9

How many distinct germplasm regions are present in a zebrafish embryo?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 10

Which of the following refers to the silencing of germ-cell-specific genes during early development?

Accepted Answer

A)  Germ-cell suppression 
B)  Sex-specific inhibition 
C)  Genomic imprinting 
D)  Genetic printing 
A)  Germ-cell suppression 
B)  Sex-specific inhibition 
C)  Genomic imprinting 
D)  Genetic printing

The presence of an SRY sequence in a mammalian genome causes the degradation of which of these structures?

Which ion controls the slow block to polyspermy?

Which of the options given represents the pathway of primordial germ-cell migration in the mouse embryo?

What is the name of the Golgi-derived vesicle located in the head of sperm that aids in its penetration of the egg?

Which type of embryo is formed from the activation of an unfertilized egg?

Which of the options given is not true of Drosophila germ-line development?

What is the name of the Golgi-derived vesicle located under the plasma membrane of an egg to block polyspermy?

Which of the options given is true of mammalian oogenesis?

How many distinct germplasm regions are present in a zebrafish embryo?

Which of the following refers to the silencing of germ-cell-specific genes during early development?

History and Basic Concepts

Drosophila Life Cycle and Development of the Body Plan

Vertebrate Life Cycles, Experimental Techniques Human Development

Laying Down the Vertebrate Body Plan: Xenopus and Zebrafish

Laying Down and Completing the Vertebrate Body Plan: Chick and Mouse

Morphogenesis: Change in Form in the Early Embryo

Cell Differentiation Stem Cells

Organogenesis

Development of the Nervous System

Growth, Post-Embryonic Development and Regeneration

Plant Life Cycle and Development

Evolution and Development

Filters

Exam 9: Germ Cells, Fertilization Sex

The presence of an SRY sequence in a mammalian genome causes the degradation of which of these structures?

Which ion controls the slow block to polyspermy?

Which of the options given represents the pathway of primordial germ-cell migration in the mouse embryo?

What is the name of the Golgi-derived vesicle located in the head of sperm that aids in its penetration of the egg?

Which type of embryo is formed from the activation of an unfertilized egg?

Which of the options given is not true of Drosophila germ-line development?

What is the name of the Golgi-derived vesicle located under the plasma membrane of an egg to block polyspermy?

Which of the options given is true of mammalian oogenesis?

How many distinct germplasm regions are present in a zebrafish embryo?

Which of the following refers to the silencing of germ-cell-specific genes during early development?

History and Basic Concepts

Drosophila Life Cycle and Development of the Body Plan

Vertebrate Life Cycles, Experimental Techniques Human Development

Laying Down the Vertebrate Body Plan: Xenopus and Zebrafish

Laying Down and Completing the Vertebrate Body Plan: Chick and Mouse

Morphogenesis: Change in Form in the Early Embryo

Cell Differentiation Stem Cells

Organogenesis

Development of the Nervous System

Growth, Post-Embryonic Development and Regeneration

Plant Life Cycle and Development

Evolution and Development

Filters