Question 1

A baby is diagnosed with Down syndrome shortly after birth.Which of the following events occurred abnormally during prenatal development?

Accepted Answer

A)  Anaphase of mitosis 
B)  Metaphase of mitosis 
C)  Telophase of mitosis 
D)  Anaphase of meiosis 
E)  Metaphase of spermatogenesis 
A)  Anaphase of mitosis 
B)  Metaphase of mitosis 
C)  Telophase of mitosis 
D)  Anaphase of meiosis 
E)  Metaphase of spermatogenesis D

Question 2

A child with a large sacrococcygeal teratoma is delivered by cesarean section.The teratoma likely arose from which type of cells?

Accepted Answer

A)  Neuroectodermal stem cells 
B)  Neural crest cells 
C)  Primitive streak cells 
D)  Primordial germ cells 
E)  Secondary oocyte cells 
A)  Neuroectodermal stem cells 
B)  Neural crest cells 
C)  Primitive streak cells 
D)  Primordial germ cells 
E)  Secondary oocyte cells D

Question 3

The birth control pill acts by blocking which process?

Accepted Answer

A)  Fertilization 
B)  Ovulation 
C)  Cleavage 
D)  Capacitation 
E)  Implantation 
A)  Fertilization 
B)  Ovulation 
C)  Cleavage 
D)  Capacitation 
E)  Implantation B

Question 4

Formation of haploid spermatozoa occurs during which developmental event?

Accepted Answer

A)  Spermiation 
B)  Capacitation 
C)  Spermatogenesis 
D)  Spermiogenesis 
E)  Fertilization 
A)  Spermiation 
B)  Capacitation 
C)  Spermatogenesis 
D)  Spermiogenesis 
E)  Fertilization

Question 5

RU-486 is an effective abortifacient.It acts by which mechanism?

Accepted Answer

A)  Blocking oogenesis 
B)  Causing menstruation 
C)  Blocking ovulation 
D)  Causing polyspermy 
E)  Blocking capacitation 
A)  Blocking oogenesis 
B)  Causing menstruation 
C)  Blocking ovulation 
D)  Causing polyspermy 
E)  Blocking capacitation

Question 6

A researcher establishes mouse spermatozoa lacking one of the following two sperm-specific proteins: Izumo and CD9.Which developmental events will be perturbed in the absence of either of these proteins?

Accepted Answer

A)  Spermatogenesis 
B)  Capacitation 
C)  Binding of spermatozoa to the zona pellucida 
D)  Fusion of the egg and spermatozoa membranes 
E)  Spermiogenesis 
A)  Spermatogenesis 
B)  Capacitation 
C)  Binding of spermatozoa to the zona pellucida 
D)  Fusion of the egg and spermatozoa membranes 
E)  Spermiogenesis

Question 7

A researcher knocks out expression of the POU domain transcription factor Oct4 in the early epiblast of a mouse embryo.Which cell type would you expect to be affected?

Accepted Answer

A)  Neural crest cells 
B)  Neural plate cells 
C)  Mesodermal cells 
D)  Primordial germ cells 
E)  Endodermal cells 
A)  Neural crest cells 
B)  Neural plate cells 
C)  Mesodermal cells 
D)  Primordial germ cells 
E)  Endodermal cells

Question 8

A newborn girl is suspected of having Turner syndrome.Which diagnostic procedure would be used to determine if this is indeed the case?

Accepted Answer

A)  Karotyping 
B)  Spectral karotyping (SKY) 
C)  Comparative genomic hybridization (CGH) 
D)  Fluorescent in situ hybridization (FISH) 
A)  Karotyping 
B)  Spectral karotyping (SKY) 
C)  Comparative genomic hybridization (CGH) 
D)  Fluorescent in situ hybridization (FISH)

Question 9

Increase in the levels of which hormone prevents menstruation during a cycle in which fertilization occurs?

Accepted Answer

A)  LH 
B)  FSH 
C)  GnRH 
D)  hCG 
E)  Estrogen 
A)  LH 
B)  FSH 
C)  GnRH 
D)  hCG 
E)  Estrogen

Question 10

A 36-year-old woman is unable to conceive a child because both her oviducts were severely scarred by pelvic inflammatory disease resulting from gonorrhea.Which type of assisted reproductive technology could be used to help her conceive?

Accepted Answer

A)  Gamete intrafallopian transfer (GIFT) 
B)  Zygote intrafallopian transfer (ZIFT) 
C)  In vitro fertilization (IVF) and embryo transfer 
A)  Gamete intrafallopian transfer (GIFT) 
B)  Zygote intrafallopian transfer (ZIFT) 
C)  In vitro fertilization (IVF) and embryo transfer

A baby is diagnosed with Down syndrome shortly after birth.Which of the following events occurred abnormally during prenatal development?

A child with a large sacrococcygeal teratoma is delivered by cesarean section.The teratoma likely arose from which type of cells?

The birth control pill acts by blocking which process?

Formation of haploid spermatozoa occurs during which developmental event?

RU-486 is an effective abortifacient.It acts by which mechanism?

A researcher establishes mouse spermatozoa lacking one of the following two sperm-specific proteins: Izumo and CD9.Which developmental events will be perturbed in the absence of either of these proteins?

A researcher knocks out expression of the POU domain transcription factor Oct4 in the early epiblast of a mouse embryo.Which cell type would you expect to be affected?

A newborn girl is suspected of having Turner syndrome.Which diagnostic procedure would be used to determine if this is indeed the case?

Increase in the levels of which hormone prevents menstruation during a cycle in which fertilization occurs?

A 36-year-old woman is unable to conceive a child because both her oviducts were severely scarred by pelvic inflammatory disease resulting from gonorrhea.Which type of assisted reproductive technology could be used to help her conceive?

Introduction

Second Week: Becoming Bilaminar and Fully Implanting

Third Week: Becoming Trilaminar and Establishing Body Axes

Fourth Week: Forming the Embryo

Principles and Mechanisms of Morphogenesis and Dysmorphogenesis

Fetal Development and the Fetus As Patient

Development of the Skin and Its Derivatives

Development of the Musculoskeletal System

Development of the Central Nervous System

Development of the Peripheral Nervous System

Development of the Respiratory System and Body Cavities

Development of the Heart

Development of the Vasculature

Development of the Gastrointestinal Tract

Development of the Urogenital System

Development of the Pharyngeal Apparatus and Face

Development of the Ears and Eyes

Development of the Limbs

Filters

Exam 2: Gametogenesis, Fertilization, and First Week

A baby is diagnosed with Down syndrome shortly after birth.Which of the following events occurred abnormally during prenatal development?

A child with a large sacrococcygeal teratoma is delivered by cesarean section.The teratoma likely arose from which type of cells?

The birth control pill acts by blocking which process?

Formation of haploid spermatozoa occurs during which developmental event?

RU-486 is an effective abortifacient.It acts by which mechanism?

A researcher establishes mouse spermatozoa lacking one of the following two sperm-specific proteins: Izumo and CD9.Which developmental events will be perturbed in the absence of either of these proteins?

A researcher knocks out expression of the POU domain transcription factor Oct4 in the early epiblast of a mouse embryo.Which cell type would you expect to be affected?

A newborn girl is suspected of having Turner syndrome.Which diagnostic procedure would be used to determine if this is indeed the case?

Increase in the levels of which hormone prevents menstruation during a cycle in which fertilization occurs?

A 36-year-old woman is unable to conceive a child because both her oviducts were severely scarred by pelvic inflammatory disease resulting from gonorrhea.Which type of assisted reproductive technology could be used to help her conceive?

Introduction

Second Week: Becoming Bilaminar and Fully Implanting

Third Week: Becoming Trilaminar and Establishing Body Axes

Fourth Week: Forming the Embryo

Principles and Mechanisms of Morphogenesis and Dysmorphogenesis

Fetal Development and the Fetus As Patient

Development of the Skin and Its Derivatives

Development of the Musculoskeletal System

Development of the Central Nervous System

Development of the Peripheral Nervous System

Development of the Respiratory System and Body Cavities

Development of the Heart

Development of the Vasculature

Development of the Gastrointestinal Tract

Development of the Urogenital System

Development of the Pharyngeal Apparatus and Face

Development of the Ears and Eyes

Development of the Limbs

Filters