Question 1

In the embryo,the three germ layers,or primary layers,are the ____________________,____________________,and ____________________.

Accepted Answer

ectoderm,m

Question 2

Genetics problem: Mom is a carrier of red-green color blindness and Dad is red-green color-blind.What is the chance that their son will be color-blind?

Accepted Answer

A) 0% 
B) 50% 
C) 75% 
D) 100% 
A) 0% 
B) 50% 
C) 75% 
D) 100%

Question 3

A person who has two different genes for a particular trait is said to be:

Accepted Answer

A) homologous 
B) homozygous 
C) heterologous 
D) heterozygous 
A) homologous 
B) homozygous 
C) heterologous 
D) heterozygous

Question 4

For people,curly hair is dominant and straight hair is recessive.Genetics problem: Dad has straight hair and Mom is heterozygous for curly hair.The chance that their child will have straight hair is:

Accepted Answer

A) 0% 
B) 25% 
C) 50% 
D) 100% 
A) 0% 
B) 25% 
C) 50% 
D) 100%

Question 5

The embryonic membrane that forms the first blood cells is the ____________________.

Accepted Answer

The answer of The embryonic membrane that forms the first...

Question 6

After birth,the ____________________ in the baby's heart is closed,which helps increase ____________________ circulation.

Accepted Answer

foramen ov

Question 7

Which of the following statements are true of the placental hormones? (Read carefully and select all of the correct statements.)

Accepted Answer

A) The chorion of the embryo produces hCG to maintain the corpus luteum during early pregnancy. 
B) Contractions of the myometrium are inhibited by the estrogen produced by the placenta. 
C) Estrogen and progesterone begin to stimulate milk production toward the end of pregnancy. 
D) Progesterone is first produced by the corpus luteum,then by the placenta. 
E) The secretion of FSH and LH by the anterior pituitary is inhibited by estrogen and progesteronE.
F)Relaxin increases the stretchiness of the ligaments of the pubic symphysis. 
A) The chorion of the embryo produces hCG to maintain the corpus luteum during early pregnancy. 
B) Contractions of the myometrium are inhibited by the estrogen produced by the placenta. 
C) Estrogen and progesterone begin to stimulate milk production toward the end of pregnancy. 
D) Progesterone is first produced by the corpus luteum,then by the placenta. 
E) The secretion of FSH and LH by the anterior pituitary is inhibited by estrogen and progesteronE.
F)Relaxin increases the stretchiness of the ligaments of the pubic symphysis.

Question 8

The possibilities for the expression of a gene are called ____________________.

Accepted Answer

The answer of The possibilities for the expression of a...

Question 9

In the early embryo,the heart and skeletal muscles are derived from the:

Accepted Answer

A) ectoderm 
B) mesoderm 
C) endoderm 
D) intraderm 
A) ectoderm 
B) mesoderm 
C) endoderm 
D) intraderm

Question 10

The amnion is the embryonic membrane that contains ____________________ to provide a(n)____________________ for the fetus.

Accepted Answer

The answer of The amnion is the embryonic membrane that...

Question 11

Fertilization usually takes place in the:

Accepted Answer

A) vagina 
B) uterus 
C) fallopian tube 
D) ovary 
A) vagina 
B) uterus 
C) fallopian tube 
D) ovary

Question 12

The early embryonic stage that consists of a hollow sphere of cells with an inner cell mass is the:

Accepted Answer

A) morula 
B) blastocyst 
C) 16-cell stage 
D) chorion 
A) morula 
B) blastocyst 
C) 16-cell stage 
D) chorion

Question 13

Genetics problem: Dad is red-green color-blind,and Mom is not a carrier.The percent chance that a son will be color-blind is ____________________ and that a daughter will be a carrier is ____________________.

Accepted Answer

The answer of Genetics problem: Dad is red-green color-blind,and Mom...

Question 14

The yolk sac is the embryonic membrane that forms the first ____________________.

Accepted Answer

The answer of The yolk sac is the embryonic membrane...

Question 15

A person who has two similar genes for a particular trait is said to be:

Accepted Answer

A) homologous 
B) homozygous 
C) heterologous 
D) heterozygous 
A) homologous 
B) homozygous 
C) heterologous 
D) heterozygous

Question 16

A person's phenotype for a particular trait refers to the:

Accepted Answer

A) genes that are present 
B) genes that are absent 
C) expression or appearance of the trait 
D) possibility that the genes will be passed to children 
A) genes that are present 
B) genes that are absent 
C) expression or appearance of the trait 
D) possibility that the genes will be passed to children

Question 17

The stage of labor during which the infant is delivered is the:

Accepted Answer

A) first stage 
B) second stage 
C) third stage 
D) fourth stage 
A) first stage 
B) second stage 
C) third stage 
D) fourth stage

Question 18

The embryonic membrane that forms the fetal part of the placenta is the ____________________.

Accepted Answer

The answer of The embryonic membrane that forms the fetal...

Question 19

A person who is homozygous for a particular trait has two ____________________ genes for it.

Accepted Answer

The answer of A person who is homozygous for a...

Question 20

A person who is heterozygous for a particular trait has:

Accepted Answer

A) an extra gene (allele) 
B) two similar genes (alleles) 
C) only one gene (allele) 
D) two different genes (alleles) 
A) an extra gene (allele) 
B) two similar genes (alleles) 
C) only one gene (allele) 
D) two different genes (alleles)

Exam 21: Human Development and Genetics

In the embryo,the three germ layers,or primary layers,are the ____________________,____________________,and ____________________.

Genetics problem: Mom is a carrier of red-green color blindness and Dad is red-green color-blind.What is the chance that their son will be color-blind?

A person who has two different genes for a particular trait is said to be:

For people,curly hair is dominant and straight hair is recessive.Genetics problem: Dad has straight hair and Mom is heterozygous for curly hair.The chance that their child will have straight hair is:

The embryonic membrane that forms the first blood cells is the ____________________.

After birth,the ____________________ in the baby's heart is closed,which helps increase ____________________ circulation.

Which of the following statements are true of the placental hormones? (Read carefully and select all of the correct statements.)

The possibilities for the expression of a gene are called ____________________.

In the early embryo,the heart and skeletal muscles are derived from the:

The amnion is the embryonic membrane that contains ____________________ to provide a(n)____________________ for the fetus.

Fertilization usually takes place in the:

The early embryonic stage that consists of a hollow sphere of cells with an inner cell mass is the:

Genetics problem: Dad is red-green color-blind,and Mom is not a carrier.The percent chance that a son will be color-blind is ____________________ and that a daughter will be a carrier is ____________________.

The yolk sac is the embryonic membrane that forms the first ____________________.

A person who has two similar genes for a particular trait is said to be:

A person's phenotype for a particular trait refers to the:

The stage of labor during which the infant is delivered is the:

The embryonic membrane that forms the fetal part of the placenta is the ____________________.

A person who is homozygous for a particular trait has two ____________________ genes for it.

A person who is heterozygous for a particular trait has:

Organization and General Plan of the Body

Some Basic Chemistry

Cells

Tissues and Membranes

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The Senses

The Endocrine System

Blood

The Heart

The Vascular System

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Body Temperature and Metabolism

The Urinary System

Fluidelectrolyte and Acidbase Balance

The Reproductive Systems

An Introduction to Microbiology and Human Disease

Filters

In the embryo,the three germ layers,or primary layers,are the ,,and .

After birth,the in the baby's heart is closed,which helps increase circulation.

The amnion is the embryonic membrane that contains to provide a(n) for the fetus.

Genetics problem: Dad is red-green color-blind,and Mom is not a carrier.The percent chance that a son will be color-blind is and that a daughter will be a carrier is .