Question 1

Respond to the following statements with reference to the five terms listed below.​
-This is the fertilized egg.

Accepted Answer

A) ​zygote 
B) ​blastula 
C) ​cleavage 
D) ​gastrula 
E) ​somites 
A) ​zygote 
B) ​blastula 
C) ​cleavage 
D) ​gastrula 
E) ​somites A

Question 2

Which embryonic tissue is incorrectly associated with its derivative?

Accepted Answer

A)  ​skin; ectoderm 
B)  ​nervous system; ectoderm 
C)  ​liver; endoderm 
D)  ​circulatory system; mesoderm 
E)  ​brain; mesoderm 
A)  ​skin; ectoderm 
B)  ​nervous system; ectoderm 
C)  ​liver; endoderm 
D)  ​circulatory system; mesoderm 
E)  ​brain; mesoderm E

Question 3

__________ regulates the maturation of the mammary glands, and then oxytocin causes __________.

Accepted Answer

​Prolactin; lactation

Question 4

Four of the following are characteristic of morphogens. Which one is the exception?

Accepted Answer

A)  ​They are long-range signals in pattern formation. 
B)  ​They are encoded by master genes. 
C)  ​They affect gene splicing. 
D)  ​Their concentration decreases with distance from source. 
E)  ​They affect development. 
A)  ​They are long-range signals in pattern formation. 
B)  ​They are encoded by master genes. 
C)  ​They affect gene splicing. 
D)  ​Their concentration decreases with distance from source. 
E)  ​They affect development.

Question 5

Respond to the following statements with reference to the five terms listed below.​
-This stage appears as a multicelled, fluid-filled ball.

Accepted Answer

A) ​zygote 
B) ​blastula 
C) ​cleavage 
D) ​gastrula 
E) ​somites 
A) ​zygote 
B) ​blastula 
C) ​cleavage 
D) ​gastrula 
E) ​somites

Question 6

Organs form and begin to function during the ____ period.

Accepted Answer

A)  ​embryonic 
B)  ​amniotic 
C)  ​fetal 
D)  ​chorionic 
E)  ​gastrulation 
A)  ​embryonic 
B)  ​amniotic 
C)  ​fetal 
D)  ​chorionic 
E)  ​gastrulation

Question 7

In humans, the term embryo refers to the following period of time: ____.

Accepted Answer

A)  ​from the ninth week after fertilization until birth 
B)  ​from the eighth week after fertilization until birth 
C)  ​from fertilization until the ninth week after fertilization 
D)  ​from 2 to 10 weeks after fertilization 
E)  ​from 2 to 8 weeks after fertilization 
A)  ​from the ninth week after fertilization until birth 
B)  ​from the eighth week after fertilization until birth 
C)  ​from fertilization until the ninth week after fertilization 
D)  ​from 2 to 10 weeks after fertilization 
E)  ​from 2 to 8 weeks after fertilization

Question 8

Use the figure above showing human embryonic developmental day 14 to answer the following question.
-Which of the following structures represents the yolk sac?

Accepted Answer

A)  ​A 
B)  ​B 
C)  ​C 
D)  ​D 
E)  ​E 
A)  ​A 
B)  ​B 
C)  ​C 
D)  ​D 
E)  ​E

Question 9

The following questions refer to the figure above illustrating frog development.
-Organ formation is occurring at ____.

Accepted Answer

A)  ​A 
B)  ​B 
C)  ​C 
D)  ​D 
E)  ​E 
A)  ​A 
B)  ​B 
C)  ​C 
D)  ​D 
E)  ​E

Question 10

Respond to the following statements with reference to the five terms below.​
-cleavage

Accepted Answer

A)  	visible marker of the site where an amphibian's body axis will be established and where gastrulation will begin 
B)  	the formation of three embryonic tissue layers 
C)  	the fusion of male and female nuclei 
D)  	the entire body divides transversely; each half grows and regenerates the missing part 
E)  	selective gene expression results in different cell types
F) 	subdividing of the zygote by mitosis; no growth occurs
G) 	region of zygote that has less yolk and is pigmented
H) 	an embryonic stage of development that has three primary tissue layers before organogenesis begins
I) 	the formation of organs
J) 	one body part develops in response to signals from an adjacent part
K) 	the growth, shaping, and spatial coordination of tissues and organs so that a predefined pattern of the whole organism results
L) 	occurs in the formation of the human hand 
A)  	visible marker of the site where an amphibian's body axis will be established and where gastrulation will begin 
B)  	the formation of three embryonic tissue layers 
C)  	the fusion of male and female nuclei 
D)  	the entire body divides transversely; each half grows and regenerates the missing part 
E)  	selective gene expression results in different cell types
F) 	subdividing of the zygote by mitosis; no growth occurs
G) 	region of zygote that has less yolk and is pigmented
H) 	an embryonic stage of development that has three primary tissue layers before organogenesis begins
I) 	the formation of organs
J) 	one body part develops in response to signals from an adjacent part
K) 	the growth, shaping, and spatial coordination of tissues and organs so that a predefined pattern of the whole organism results
L) 	occurs in the formation of the human hand

Question 11

Respond to the following statements with reference to the five terms below.​
-This is the first primary tissue layer to form.

Accepted Answer

A) ​somites 
B) ​blastomeres 
C) ​ectoderm 
D) ​mesoderm 
E) ​endoderm 
A) ​somites 
B) ​blastomeres 
C) ​ectoderm 
D) ​mesoderm 
E) ​endoderm

Question 12

Respond to the following statements with reference to the five terms below.​
-differentiation

Accepted Answer

A) ​somites 
B) ​blastomeres 
C) ​ectoderm 
D) ​mesoderm 
E) ​endoderm 
A) ​somites 
B) ​blastomeres 
C) ​ectoderm 
D) ​mesoderm 
E) ​endoderm

Question 13

__________ results in an early embryo that has three primary tissue layers.

Accepted Answer

The answer of __________ results in an early embryo that...

Question 14

Is a mutation more likely to be lethal if it impacts early or late stages in development? Explain your answer.

Accepted Answer

​The earlier the expression of a mutatio

Question 15

Without _____, humans might have a tail.

Accepted Answer

A)  ​differentiation 
B)  epigenetics 
C)  ​cell migrations 
D)  ​apoptosis 
E)  ​the maternal gene effect 
A)  ​differentiation 
B)  epigenetics 
C)  ​cell migrations 
D)  ​apoptosis 
E)  ​the maternal gene effect

Question 16

The zygote goes through ____ to become a(n) ____.

Accepted Answer

A)  ​cleavage; blastula 
B)  ​cleavage; gastrula 
C)  ​zygote formation; embryo 
D)  ​cleavage; egg 
E)  ​fertilization; blastula 
A)  ​cleavage; blastula 
B)  ​cleavage; gastrula 
C)  ​zygote formation; embryo 
D)  ​cleavage; egg 
E)  ​fertilization; blastula

Question 17

During pregnancy, a maternal antibody transported across the placenta to the fetal bloodstream can cause a problem if the mother ____.

Accepted Answer

A)  ​has passed on any teratogens 
B)  ​and baby have different Rh factors 
C)  ​is producing HCG 
D)  ​smokes during pregnancy 
E)  ​uses alcohol during pregnancy 
A)  ​has passed on any teratogens 
B)  ​and baby have different Rh factors 
C)  ​is producing HCG 
D)  ​smokes during pregnancy 
E)  ​uses alcohol during pregnancy

Question 18

Respond to the following statements with reference to the five terms below.​
-gastrula

Accepted Answer

A)  	visible marker of the site where an amphibian's body axis will be established and where gastrulation will begin 
B)  	the formation of three embryonic tissue layers 
C)  	the fusion of male and female nuclei 
D)  	the entire body divides transversely; each half grows and regenerates the missing part 
E)  	selective gene expression results in different cell types
F) 	subdividing of the zygote by mitosis; no growth occurs
G) 	region of zygote that has less yolk and is pigmented
H) 	an embryonic stage of development that has three primary tissue layers before organogenesis begins
I) 	the formation of organs
J) 	one body part develops in response to signals from an adjacent part
K) 	the growth, shaping, and spatial coordination of tissues and organs so that a predefined pattern of the whole organism results
L) 	occurs in the formation of the human hand 
A)  	visible marker of the site where an amphibian's body axis will be established and where gastrulation will begin 
B)  	the formation of three embryonic tissue layers 
C)  	the fusion of male and female nuclei 
D)  	the entire body divides transversely; each half grows and regenerates the missing part 
E)  	selective gene expression results in different cell types
F) 	subdividing of the zygote by mitosis; no growth occurs
G) 	region of zygote that has less yolk and is pigmented
H) 	an embryonic stage of development that has three primary tissue layers before organogenesis begins
I) 	the formation of organs
J) 	one body part develops in response to signals from an adjacent part
K) 	the growth, shaping, and spatial coordination of tissues and organs so that a predefined pattern of the whole organism results
L) 	occurs in the formation of the human hand

Question 19

__________, products of master genes, act as long-range signals that diffuse out from a source and form a concentration gradient.

Accepted Answer

The answer of __________, products of master genes, act as...

Question 20

Fertilization typically occurs in the ____.

Accepted Answer

A)  ​ovary 
B)  ​oviduct 
C)  ​uterus 
D)  ​cervix 
E)  ​vagina 
A)  ​ovary 
B)  ​oviduct 
C)  ​uterus 
D)  ​cervix 
E)  ​vagina

Exam 42: Animal Development

Respond to the following statements with reference to the five terms listed below.​ -This is the fertilized egg.

Which embryonic tissue is incorrectly associated with its derivative?

__________ regulates the maturation of the mammary glands, and then oxytocin causes __________.

Four of the following are characteristic of morphogens. Which one is the exception?

Respond to the following statements with reference to the five terms listed below.​ -This stage appears as a multicelled, fluid-filled ball.

Organs form and begin to function during the ____ period.

In humans, the term embryo refers to the following period of time: ____.

Use the figure above showing human embryonic developmental day 14 to answer the following question. -Which of the following structures represents the yolk sac?

The following questions refer to the figure above illustrating frog development. -Organ formation is occurring at ____.

Respond to the following statements with reference to the five terms below.​ -cleavage

Respond to the following statements with reference to the five terms below.​ -This is the first primary tissue layer to form.

Respond to the following statements with reference to the five terms below.​ -differentiation

__________ results in an early embryo that has three primary tissue layers.

Is a mutation more likely to be lethal if it impacts early or late stages in development? Explain your answer.

Without _____, humans might have a tail.

The zygote goes through ____ to become a(n) ____.

During pregnancy, a maternal antibody transported across the placenta to the fetal bloodstream can cause a problem if the mother ____.

Respond to the following statements with reference to the five terms below.​ -gastrula

__________, products of master genes, act as long-range signals that diffuse out from a source and form a concentration gradient.

Fertilization typically occurs in the ____.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Starts - Photosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

From Dna to Protein

Gene Control

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizating Information About Species

Lifes Origin and Early Evolution

Viruses - Bacteria - and Archaea

Protists - the Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution - the Invertibrates

Animal Evolution - the Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Behavior

Filters

Respond to the following statements with reference to the five terms listed below. -This is the fertilized egg.

regulates the maturation of the mammary glands, and then oxytocin causes .

Respond to the following statements with reference to the five terms listed below. -This stage appears as a multicelled, fluid-filled ball.

Respond to the following statements with reference to the five terms below. -cleavage

Respond to the following statements with reference to the five terms below. -This is the first primary tissue layer to form.

Respond to the following statements with reference to the five terms below. -differentiation

The zygote goes through to become a(n) .

Respond to the following statements with reference to the five terms below. -gastrula