Question 1

Which of the following statements concerning proto-oncogenes is FALSE?

Accepted Answer

A)  They are abnormal genes. 
B)  They code for growth factors. 
C)  They code for growth factor receptors. 
D)  They are involved in cancer. 
E)  They code for transcription factors. 
A)  They are abnormal genes. 
B)  They code for growth factors. 
C)  They code for growth factor receptors. 
D)  They are involved in cancer. 
E)  They code for transcription factors.

Question 2

Scientists are able to determine the location of cells expressing a certain gene in an embryo by:

Accepted Answer

A)  the polymerase chain reaction. 
B)  blastoderm fate mapping. 
C)  gene mapping. 
D)  immunofluorescence. 
E)  multiple Southern blots. 
A)  the polymerase chain reaction. 
B)  blastoderm fate mapping. 
C)  gene mapping. 
D)  immunofluorescence. 
E)  multiple Southern blots.

Question 3

Which of the following is characteristic of the developmental pattern referred to as mosaic development?

Accepted Answer

A)  The cells of the adult are very different from each other. 
B)  The fate of adult cells is predetermined in embryonic founder cells. 
C)  Adult cells are richly interspersed with proteins. 
D)  Embryonic cells have a wide range of possible developmental patterns. 
E)  Embryos have a wide range of morphologies, but all look identical as adults. 
A)  The cells of the adult are very different from each other. 
B)  The fate of adult cells is predetermined in embryonic founder cells. 
C)  Adult cells are richly interspersed with proteins. 
D)  Embryonic cells have a wide range of possible developmental patterns. 
E)  Embryos have a wide range of morphologies, but all look identical as adults.

Question 4

MATCHING
Sequence the steps that created the first cloned mammal and demonstrated that a differentiated mammalian cell has the genetic information to direct normal development.
a.in vitro culture of embryo
d.fuse mammary cell with enucleated egg cell
b.enucleate egg cell
e.live organism produced
c.transfer to host mother uterus
-step 3

Accepted Answer

The answer of MATCHING
Sequence the steps that created the first...

Question 5

The ABC genes in the model of Arabidopsis flower development are organ-identity genes that are also:

Accepted Answer

A)  segmentation genes. 
B)  homeotic genes. 
C)  gap genes. 
D)  translation factors genes. 
E)  growth factor genes. 
A)  segmentation genes. 
B)  homeotic genes. 
C)  gap genes. 
D)  translation factors genes. 
E)  growth factor genes.

Question 6

In the process known as __________, the fate of a cell is influenced by interactions with neighboring cells.

Accepted Answer

A)  determination 
B)  induction 
C)  apoptosis 
D)  differentiation 
E)  pleiotropy 
A)  determination 
B)  induction 
C)  apoptosis 
D)  differentiation 
E)  pleiotropy

Question 7

About __________ of the genes in a mouse have a similar gene in humans.

Accepted Answer

A)  10%. 
B)  25% 
C)  50% 
D)  90% 
E)  99% 
A)  10%. 
B)  25% 
C)  50% 
D)  90% 
E)  99%

Question 8

Most segmentation genes code for:

Accepted Answer

A)  transcription factors. 
B)  genetic switches such as operators. 
C)  repressors. 
D)  insulin-like growth factors. 
E)  morphogens. 
A)  transcription factors. 
B)  genetic switches such as operators. 
C)  repressors. 
D)  insulin-like growth factors. 
E)  morphogens.

Question 9

Cells becoming progressively more specialized in their structure and gene activity is known as:

Accepted Answer

A)  morphogenesis. 
B)  determination. 
C)  differentiation. 
D)  maturation. 
E)  growth. 
A)  morphogenesis. 
B)  determination. 
C)  differentiation. 
D)  maturation. 
E)  growth.

Question 10

A morphogen is a chemical agent that affects the differentiation of cells and the development of form.

Accepted Answer

A) True 
 B)False

Question 11

In early Drosophila development, which of the following forms first?

Accepted Answer

A)  segmented larva 
B)  pupa 
C)  syncytial blastoderm 
D)  blastocyst 
E)  cellular blastoderm 
A)  segmented larva 
B)  pupa 
C)  syncytial blastoderm 
D)  blastocyst 
E)  cellular blastoderm

Question 12

What is the difference between a totipotent stem cell and a pluripotent stem cell? What piece of evidence would you need to distinguish them?

Accepted Answer

A totipotent stem cell has the

Question 13

Regulation of development takes place mostly at the level of:

Accepted Answer

A)  replication. 
B)  transcription. 
C)  posttranscription. 
D)  translation. 
E)  posttranslation. 
A)  replication. 
B)  transcription. 
C)  posttranscription. 
D)  translation. 
E)  posttranslation.

Question 14

Genes that normally block cell division are called:

Accepted Answer

A)  growth factor genes. 
B)  oncogenes. 
C)  tumor suppressor genes. 
D)  proto-oncogenes. 
E)  growth inhibiting genes. 
A)  growth factor genes. 
B)  oncogenes. 
C)  tumor suppressor genes. 
D)  proto-oncogenes. 
E)  growth inhibiting genes.

Question 15

Adult stem cells in the brain are totipotent and differentiate into neurons and glial cells.
_________________

Accepted Answer

A) True 
 B)False

Question 16

Figure 17-12
Use the figure to answer the corresponding question(s).  
-Homeotic genes of Drosophila:

Accepted Answer

A)  cause cells of the same type to produce differing amounts of gene products. 
B)  specifies the developmental plan for each part of each segment. 
C)  are expressed in only one sex in any particular species. 
D)  when mutated, cause body parts to be duplicated. 
E)  control developmental timing. 
A)  cause cells of the same type to produce differing amounts of gene products. 
B)  specifies the developmental plan for each part of each segment. 
C)  are expressed in only one sex in any particular species. 
D)  when mutated, cause body parts to be duplicated. 
E)  control developmental timing.

Question 17

One characteristic that makes Caenorhabditis elegans attractive for developmental studies is:

Accepted Answer

A)  its small, transparent body. 
B)  the extensive number of genes shared with humans. 
C)  the developmental defects that occur in this organism. 
D)  the close evolutionary relationship between this mammal and humans. 
E)  the presence of zygotic segmentation genes, similar to those found in humans. 
A)  its small, transparent body. 
B)  the extensive number of genes shared with humans. 
C)  the developmental defects that occur in this organism. 
D)  the close evolutionary relationship between this mammal and humans. 
E)  the presence of zygotic segmentation genes, similar to those found in humans.

Question 18

Which of the following statements does not present a reason that Drosophila melanogaster is a suitable research subject for developmental genetics studies?

Accepted Answer

A)  An abundance of developmental genes is available for study. 
B)  An abundance of mutants is available for study. 
C)  A new mutation can be mapped on the chromosome relatively easily. 
D)  Flies can be easily grown in the laboratory setting. 
E)  The control of fly development is unique and unrelated to human development. 
A)  An abundance of developmental genes is available for study. 
B)  An abundance of mutants is available for study. 
C)  A new mutation can be mapped on the chromosome relatively easily. 
D)  Flies can be easily grown in the laboratory setting. 
E)  The control of fly development is unique and unrelated to human development.

Question 19

The __________ is a functional region found in certain proteins that are important in development.It consists of 60 amino acids that form 4 helices.

Accepted Answer

A)  homeobox 
B)  homeodomain 
C)  homeogene 
D)  homeochromosome 
E)  functional group 
A)  homeobox 
B)  homeodomain 
C)  homeogene 
D)  homeochromosome 
E)  functional group

Question 20

The first Drosophila segmentation genes to act are the __________, which begin organization of the body into regions.

Accepted Answer

A)  pair-rule genes 
B)  segment polarity genes 
C)  gap genes 
D)  homeotic genes 
E)  maternal effect genes 
A)  pair-rule genes 
B)  segment polarity genes 
C)  gap genes 
D)  homeotic genes 
E)  maternal effect genes

Exam 17: Developmental Genetics

Which of the following statements concerning proto-oncogenes is FALSE?

Scientists are able to determine the location of cells expressing a certain gene in an embryo by:

Which of the following is characteristic of the developmental pattern referred to as mosaic development?

The ABC genes in the model of Arabidopsis flower development are organ-identity genes that are also:

In the process known as __________, the fate of a cell is influenced by interactions with neighboring cells.

About __________ of the genes in a mouse have a similar gene in humans.

Most segmentation genes code for:

Cells becoming progressively more specialized in their structure and gene activity is known as:

A morphogen is a chemical agent that affects the differentiation of cells and the development of form.

In early Drosophila development, which of the following forms first?

What is the difference between a totipotent stem cell and a pluripotent stem cell? What piece of evidence would you need to distinguish them?

Regulation of development takes place mostly at the level of:

Genes that normally block cell division are called:

Adult stem cells in the brain are totipotent and differentiate into neurons and glial cells. _________________

Figure 17-12 Use the figure to answer the corresponding question(s). -Homeotic genes of Drosophila:

One characteristic that makes Caenorhabditis elegans attractive for developmental studies is:

Which of the following statements does not present a reason that Drosophila melanogaster is a suitable research subject for developmental genetics studies?

The __________ is a functional region found in certain proteins that are important in development.It consists of 60 amino acids that form 4 helices.

The first Drosophila segmentation genes to act are the __________, which begin organization of the body into regions.

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna: the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology: Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

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