Question 1

Pattern formation includes signaling between cells, changes in cell shape, and cell apoptosis.

Accepted Answer

A) True 
 B)False  False

Question 2

The role of maternal effect genes in Drosophila is to:

Accepted Answer

A)  code for the production of yolk proteins 
B)  prepare the female fly for reproduction 
C)  control the early stages of Drosophila development 
D)  control the development of the pupa 
E)  control the shape and size of the eggs produced 
A)  code for the production of yolk proteins 
B)  prepare the female fly for reproduction 
C)  control the early stages of Drosophila development 
D)  control the development of the pupa 
E)  control the shape and size of the eggs produced C

Question 3

What is an advantage for using Arabidopsis to study plant development and genetics?

Accepted Answer

A)  The Arabidopsis genome is largely unstudied, and therefore there is a lot that scientists can learn. 
B)  Arabidopsis mutants can be easily induced with chemicals. 
C)  There are no developmental mutants in Arabidopsis , therefore, normal development can be studied easily. 
D)  This plant completes its life cycle in just a few months. 
E)  This plant is a weed of no economic importance. 
A)  The Arabidopsis genome is largely unstudied, and therefore there is a lot that scientists can learn. 
B)  Arabidopsis mutants can be easily induced with chemicals. 
C)  There are no developmental mutants in Arabidopsis , therefore, normal development can be studied easily. 
D)  This plant completes its life cycle in just a few months. 
E)  This plant is a weed of no economic importance. B

Question 4

Cells become progressively committed to specific patterns of gene activity and developmental fate through a process known as:

Accepted Answer

A)  morphogenesis 
B)  determination 
C)  cell differentiation 
D)  pattern formation 
E)  growth 
A)  morphogenesis 
B)  determination 
C)  cell differentiation 
D)  pattern formation 
E)  growth

Question 5

The process of ____ describes cell specialization structure and gene activity.

Accepted Answer

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

Question 6

Cloning mammals has proven to be:

Accepted Answer

A)  impossible 
B)  easy and straightforward 
C)  not technically feasible at the present time 
D)  a technique that produces many similar-looking, deformed progeny 
E)  a process with a low success rate and a high incidence of genetic defects 
A)  impossible 
B)  easy and straightforward 
C)  not technically feasible at the present time 
D)  a technique that produces many similar-looking, deformed progeny 
E)  a process with a low success rate and a high incidence of genetic defects

Question 7

Match between columns
                        Premises: Step 4

Accepted Answer

The Answer of enucleate egg cell and transfer to host is...

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

The occurrence of human identical twins is evidence that:

Accepted Answer

A)  all human cells are totipotent. 
B)  no human totipotent cells have been identified. 
C)  the only totipotent human cell is the one-cell embryo. 
D)  cells in a two-cell human embryo are totipotent. 
E)  cells in a two-cell human embryo are pluripotent. 
A)  all human cells are totipotent. 
B)  no human totipotent cells have been identified. 
C)  the only totipotent human cell is the one-cell embryo. 
D)  cells in a two-cell human embryo are totipotent. 
E)  cells in a two-cell human embryo are pluripotent.

Question 10

Undifferentiated cells that can divide and specialize to form a variety of different cells are called:

Accepted Answer

A)  differential cells 
B)  mother cells 
C)  somatic cells 
D)  stem cells 
E)  morphogens 
A)  differential cells 
B)  mother cells 
C)  somatic cells 
D)  stem cells 
E)  morphogens

Question 11

In animals, somatic cell lines are those that will undergo meiosis, differentiate into gametes, and be set aside early in development.

Accepted Answer

A) True 
 B)False

Question 12

Homeotic genes of Drosophila :

Accepted Answer

A)  cause cells of the same type to produce differing amounts of gene products 
B)  specify the developmental plan(s) for each segment 
C)  are expressed in only one sex in any particular species 
D)  are always the sites of lethal mutations 
E)  control developmental timing 
A)  cause cells of the same type to produce differing amounts of gene products 
B)  specify the developmental plan(s) for each segment 
C)  are expressed in only one sex in any particular species 
D)  are always the sites of lethal mutations 
E)  control developmental timing

Question 13

Scientists were able to produce induced pluripotent stem cells by introducing key homeotic factors into mature mouse fibroblasts and human skin cells.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

A) True 
 B)False

Question 15

Cells become progressively organized into recognizable structures through a process known as:

Accepted Answer

A)  morphogenesis 
B)  determination 
C)  cell differentiation 
D)  pattern formation 
E)  growth 
A)  morphogenesis 
B)  determination 
C)  cell differentiation 
D)  pattern formation 
E)  growth

Question 16

When the human gene coding for insulin is introduced into a mouse embryo, the gene is correctly expressed in the appropriate tissue. This shows that:

Accepted Answer

A)  tissue-specific gene expression is highly conserved during evolution. 
B)  the introduced gene was edited by the mouse embryo for proper function. 
C)  the introduced gene was exactly the same as the mouse gene for insulin. 
D)  mice and humans are not closely related. 
E)  mouse genes are not tissue specific. 
A)  tissue-specific gene expression is highly conserved during evolution. 
B)  the introduced gene was edited by the mouse embryo for proper function. 
C)  the introduced gene was exactly the same as the mouse gene for insulin. 
D)  mice and humans are not closely related. 
E)  mouse genes are not tissue specific.

Question 17

What evidence supports the idea that some nuclei are totipotent?

Accepted Answer

A)  Nuclei taken from the cells of an embryonic frog can direct a frog egg to develop into a tadpole. 
B)  Nuclei taken from the cells of a frog embryo can direct any amphibian egg to develop into a tadpole. 
C)  Nuclei taken from a different species can direct a tadpole egg to develop into a normal tadpole. 
D)  Some cells are capable of undergoing unlimited cell cycles. 
E)  Some cells are capable of arresting their cell cycle at will. 
A)  Nuclei taken from the cells of an embryonic frog can direct a frog egg to develop into a tadpole. 
B)  Nuclei taken from the cells of a frog embryo can direct any amphibian egg to develop into a tadpole. 
C)  Nuclei taken from a different species can direct a tadpole egg to develop into a normal tadpole. 
D)  Some cells are capable of undergoing unlimited cell cycles. 
E)  Some cells are capable of arresting their cell cycle at will.

Question 18

Match between columns
                        Premises: Step 5

Accepted Answer

The Answer of fuse mammary cell with enucleated egg cell is...

Question 19

Mutations in segmentation genes cause one body part to be substituted for another body part.

Accepted Answer

A) True 
 B)False

Question 20

Figure 17-4
 
In the accompanying figure, the purpose of growing the donor cells in nutrient-limited media is to:

Accepted Answer

A)  have small cells that would be easier to manipulate 
B)  replicate a normal environment 
C)  force the donor cell nucleus into the G0 cell stage 
D)  induce favorable mutations 
E)  initiate apoptosis 
A)  have small cells that would be easier to manipulate 
B)  replicate a normal environment 
C)  force the donor cell nucleus into the G0 cell stage 
D)  induce favorable mutations 
E)  initiate apoptosis

Exam 17: Developmental Genetics

Pattern formation includes signaling between cells, changes in cell shape, and cell apoptosis.

The role of maternal effect genes in Drosophila is to:

What is an advantage for using Arabidopsis to study plant development and genetics?

Cells become progressively committed to specific patterns of gene activity and developmental fate through a process known as:

The process of ____ describes cell specialization structure and gene activity.

Cloning mammals has proven to be:

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

The occurrence of human identical twins is evidence that:

Undifferentiated cells that can divide and specialize to form a variety of different cells are called:

In animals, somatic cell lines are those that will undergo meiosis, differentiate into gametes, and be set aside early in development.

Homeotic genes of Drosophila :

Scientists were able to produce induced pluripotent stem cells by introducing key homeotic factors into mature mouse fibroblasts and human skin cells.

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

Cells become progressively organized into recognizable structures through a process known as:

When the human gene coding for insulin is introduced into a mouse embryo, the gene is correctly expressed in the appropriate tissue. This shows that:

What evidence supports the idea that some nuclei are totipotent?

Mutations in segmentation genes cause one body part to be substituted for another body part.

Figure 17-4 In the accompanying figure, the purpose of growing the donor cells in nutrient-limited media is to:

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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