Question 1

Which family of genes is most heavily involved in segmentation of the body?

Accepted Answer

A) Hedgehog 
B) Pax 
C) Transforming growth factor-β 
D) Fibroblast growth factor 
E) Hox 
A) Hedgehog 
B) Pax 
C) Transforming growth factor-β 
D) Fibroblast growth factor 
E) Hox E

Question 2

Which of the following is/are properties of Hox genes?

Accepted Answer

A) Twelve paralogous groups 
B) 5′ genes expressed in more anterior structures than 3′ genes 
C) Four clusters of Hox genes located on two chromosomes 
D) Expressed in developing segmented structures 
E) All of the above 
A) Twelve paralogous groups 
B) 5′ genes expressed in more anterior structures than 3′ genes 
C) Four clusters of Hox genes located on two chromosomes 
D) Expressed in developing segmented structures 
E) All of the above D

Question 3

Which of the following is not a family of growth factors?

Accepted Answer

A) Transforming growth factor 
B) Wnt 
C) Pax 
D) Fibroblast growth factor 
E) Hedgehog 
A) Transforming growth factor 
B) Wnt 
C) Pax 
D) Fibroblast growth factor 
E) Hedgehog C

Question 4

Which molecule is most heavily involved in the process of lateral inhibition?

Accepted Answer

A) Sonic hedgehog 
B) Sox-9 
C) Notch 
D) Transforming growth factor-β 
E) None of the above 
A) Sonic hedgehog 
B) Sox-9 
C) Notch 
D) Transforming growth factor-β 
E) None of the above

Question 5

Which Hox gene is expressed in the most anterior position in the embryonic body?

Accepted Answer

A) Hoxc-12 
B) Hoxd-11 
C) Hoxb-5 
D) Hoxa-4 
E) Hoxb-9 
A) Hoxc-12 
B) Hoxd-11 
C) Hoxb-5 
D) Hoxa-4 
E) Hoxb-9

Question 6

Which growth factor must be combined with cholesterol to be active?

Accepted Answer

A) Sonic hedgehog 
B) Fibroblast growth factor-2 
C) Transforming growth factor-β 
D) Bone morphogenetic protein-7 
E) None of the above 
A) Sonic hedgehog 
B) Fibroblast growth factor-2 
C) Transforming growth factor-β 
D) Bone morphogenetic protein-7 
E) None of the above

Question 7

The products of homeobox-containing genes are _______________.

Accepted Answer

A) Extracellular matrix receptors 
B) Cytoskeletal elements 
C) Inductors 
D) Transcription factors 
E) Cell adhesion molecules 
A) Extracellular matrix receptors 
B) Cytoskeletal elements 
C) Inductors 
D) Transcription factors 
E) Cell adhesion molecules

Question 8

Which of the following families of transcription factors contain(s)a homeobox?

Accepted Answer

A) Lim 
B) Pax 
C) Msx 
D) Dlx 
E) All of the above 
A) Lim 
B) Pax 
C) Msx 
D) Dlx 
E) All of the above

Question 9

β-Catenin is an integral part of which signaling/signal transduction pathway?

Accepted Answer

A) Fibroblast growth factor/receptor tyrosine kinase 
B) Wnt 
C) Delta-Notch 
D) Transforming growth factor/serine-threonine kinase 
E) None of the above 
A) Fibroblast growth factor/receptor tyrosine kinase 
B) Wnt 
C) Delta-Notch 
D) Transforming growth factor/serine-threonine kinase 
E) None of the above

Which family of genes is most heavily involved in segmentation of the body?

Which of the following is/are properties of Hox genes?

Which of the following is not a family of growth factors?

Which molecule is most heavily involved in the process of lateral inhibition?

Which Hox gene is expressed in the most anterior position in the embryonic body?

Which growth factor must be combined with cholesterol to be active?

The products of homeobox-containing genes are _______________.

Which of the following families of transcription factors contain(s)a homeobox?

β-Catenin is an integral part of which signaling/signal transduction pathway?

Getting Ready for Pregnancy

Transport of Gametes and Fertilization

Cleavage and Implantation

Formation of Germ Layers and Early Derivatives

Establishment of the Basic Embryonic Body Plan

Placenta and Extraembryonic Membranes

Developmental Disorders: Causes, mechanisms, and Patterns

Integumentary, skeletal, and Muscular Systems

Limb Development

Nervous System

Neural Crest

Sense Organs

Head and Neck

Digestive and Respiratory Systems and Body Cavities

Urogenital System

Cardiovascular System

Fetal Period and Birth

Filters

Exam 4: Molecular Basis for Embryonic Development

Which family of genes is most heavily involved in segmentation of the body?

Which of the following is/are properties of Hox genes?

Which of the following is not a family of growth factors?

Which molecule is most heavily involved in the process of lateral inhibition?

Which Hox gene is expressed in the most anterior position in the embryonic body?

Which growth factor must be combined with cholesterol to be active?

The products of homeobox-containing genes are _______________.

Which of the following families of transcription factors contain(s)a homeobox?

β-Catenin is an integral part of which signaling/signal transduction pathway?

Getting Ready for Pregnancy

Transport of Gametes and Fertilization

Cleavage and Implantation

Formation of Germ Layers and Early Derivatives

Establishment of the Basic Embryonic Body Plan

Placenta and Extraembryonic Membranes

Developmental Disorders: Causes, mechanisms, and Patterns

Integumentary, skeletal, and Muscular Systems

Limb Development

Nervous System

Neural Crest

Sense Organs

Head and Neck

Digestive and Respiratory Systems and Body Cavities

Urogenital System

Cardiovascular System

Fetal Period and Birth

Filters