Question 1

The hollow cavity within the blastocyst is the

Accepted Answer

A)  gastrula. 
B)  morula. 
C)  blastocoele. 
D)  yolk sac. 
E)  amnion. 
A)  gastrula. 
B)  morula. 
C)  blastocoele. 
D)  yolk sac. 
E)  amnion.

Question 2

Which of the following is an example of positive feedback during labor?

Accepted Answer

A)  the movement of the fetus toward the cervical canal 
B)  the pressure the unborn exerts on the cervix 
C)  the distortion of the myometrium stimulates oxytocin release 
D)  the dilation of the cervix followed by the rupture of the amnion 
E)  the ejection of the placenta at the end of the placental stage 
A)  the movement of the fetus toward the cervical canal 
B)  the pressure the unborn exerts on the cervix 
C)  the distortion of the myometrium stimulates oxytocin release 
D)  the dilation of the cervix followed by the rupture of the amnion 
E)  the ejection of the placenta at the end of the placental stage

Question 3

A relatively common inherited autosomal recessive disorder is

Accepted Answer

A)  Duchenne muscular dystrophy. 
B)  cystic fibrosis. 
C)  Huntington's disease. 
D)  hemophilia. 
E)  Marfan's syndrome. 
A)  Duchenne muscular dystrophy. 
B)  cystic fibrosis. 
C)  Huntington's disease. 
D)  hemophilia. 
E)  Marfan's syndrome.

Question 4

Genes that appear on the X chromosome are said to be

Accepted Answer

A)  X-linked. 
B)  autosomal recessive. 
C)  heterozygous. 
D)  homologous. 
E)  lethal. 
A)  X-linked. 
B)  autosomal recessive. 
C)  heterozygous. 
D)  homologous. 
E)  lethal.

Question 5

An individual who is homozygous dominant for a trait would be represented as

Accepted Answer

A)  aA. 
B)  aa. 
C)  AA. 
D)  Aa. 
E)  a fusion of the different phenotypes of the given trait. 
A)  aA. 
B)  aa. 
C)  AA. 
D)  Aa. 
E)  a fusion of the different phenotypes of the given trait.

Question 6

Separation of the inner cell mass from the trophoblast forms the

Accepted Answer

A)  blastocoele. 
B)  lacunae. 
C)  amniotic cavity. 
D)  chorion. 
E)  allantois. 
A)  blastocoele. 
B)  lacunae. 
C)  amniotic cavity. 
D)  chorion. 
E)  allantois.

Question 7

Figure 20-1 Events in Implantation
Use Figure 20-1 to identify the labeled part.
-Label A represents which of the following structures?

Accepted Answer

A)  syncytial trophoblast 
B)  developing villi 
C)  lacuna 
D)  uterine glands 
E)  amniotic cavity 
A)  syncytial trophoblast 
B)  developing villi 
C)  lacuna 
D)  uterine glands 
E)  amniotic cavity

Question 8

The purpose of the Human Genome Project (HGP) is to

Accepted Answer

A)  identify alleles for research in the field of autosomal recessive diseases. 
B)  describe the full set of genetic material in human chromosomes. 
C)  discover new methods for fingerprinting and other forensic methods. 
D)  create a "master race" by limiting the gene pool to carriers of desirable genes. 
E)  study human development and to ultimately find a way to slow down senescence. 
A)  identify alleles for research in the field of autosomal recessive diseases. 
B)  describe the full set of genetic material in human chromosomes. 
C)  discover new methods for fingerprinting and other forensic methods. 
D)  create a "master race" by limiting the gene pool to carriers of desirable genes. 
E)  study human development and to ultimately find a way to slow down senescence.

Question 9

Which of the following phenotypic characteristics is an example of "codominance"?

Accepted Answer

A)  normal skin pigmentation 
B)  hair color other than pure blond or red 
C)  presence of Rh factor on red blood cell membranes 
D)  presence of A or B antigens on red blood cell membranes 
E)  ability to taste phenylthiocarbamate (PT
C)  
A)  normal skin pigmentation 
B)  hair color other than pure blond or red 
C)  presence of Rh factor on red blood cell membranes 
D)  presence of A or B antigens on red blood cell membranes 
E)  ability to taste phenylthiocarbamate (PT
C)

Question 10

The study of the development of the human organism during the first two months after fertilization is called

Accepted Answer

A)  genetics. 
B)  embryology. 
C)  pediatrics. 
D)  anthropology. 
E)  gerontology. 
A)  genetics. 
B)  embryology. 
C)  pediatrics. 
D)  anthropology. 
E)  gerontology.

Question 11

Sperm carry

Accepted Answer

A)  only one X sex chromosome, exclusively. 
B)  only one Y sex chromosome, exclusively. 
C)  no sex chromosomes. 
D)  two Y sex chromosomes. 
E)  one X or one Y sex chromosome. 
A)  only one X sex chromosome, exclusively. 
B)  only one Y sex chromosome, exclusively. 
C)  no sex chromosomes. 
D)  two Y sex chromosomes. 
E)  one X or one Y sex chromosome.

Question 12

The presence of ________ in blood or urine is a reliable indication of pregnancy.

Accepted Answer

A)  estrogen and progesterone 
B)  luteinizing hormone 
C)  human placental lactogen 
D)  human chorionic gonadotropin 
E)  relaxin 
A)  estrogen and progesterone 
B)  luteinizing hormone 
C)  human placental lactogen 
D)  human chorionic gonadotropin 
E)  relaxin

Question 13

Regarding X-linked traits, if a father with normal color vision has children with a heterozygous mother, what percentage of the daughters will have normal color vision?

Accepted Answer

A)  0% 
B)  25% 
C)  50% 
D)  75% 
E)  100% 
A)  0% 
B)  25% 
C)  50% 
D)  75% 
E)  100%

Question 14

If an X-carrying sperm fertilizes an egg, the resulting zygote will be

Accepted Answer

A)  either male or female. 
B)  male only. 
C)  female only. 
D)  nonviable. 
E)  both male and female. 
A)  either male or female. 
B)  male only. 
C)  female only. 
D)  nonviable. 
E)  both male and female.

Question 15

The period of gestation that is characterized by rapid fetal growth and adipose tissue deposition is the ________ trimester(s).

Accepted Answer

A)  first 
B)  second 
C)  third 
D)  first and second 
E)  second and third 
A)  first 
B)  second 
C)  third 
D)  first and second 
E)  second and third

Question 16

Figure 20-1 Events in Implantation
Use Figure 20-1 to identify the labeled part.
-Label H represents which of the following structures?

Accepted Answer

A)  blastocyst 
B)  inner cell mass 
C)  trophoblast 
D)  blastocoel 
E)  lacuna 
A)  blastocyst 
B)  inner cell mass 
C)  trophoblast 
D)  blastocoel 
E)  lacuna

Question 17

Regarding lactation and the mammary glands, which statement is true?

Accepted Answer

A)  Colostrum contains more proteins than breast milk. 
B)  An expectant mother's mammary glands begin producing colostrum by the end of the second month of pregnancy. 
C)  As colostrum production increases, the mammary glands convert to milk production. 
D)  Colostrum, unlike milk, contains large quantities of lysozymes. 
E)  Colostrum has much more fat than breast milk. 
A)  Colostrum contains more proteins than breast milk. 
B)  An expectant mother's mammary glands begin producing colostrum by the end of the second month of pregnancy. 
C)  As colostrum production increases, the mammary glands convert to milk production. 
D)  Colostrum, unlike milk, contains large quantities of lysozymes. 
E)  Colostrum has much more fat than breast milk.

The hollow cavity within the blastocyst is the

Which of the following is an example of positive feedback during labor?

A relatively common inherited autosomal recessive disorder is

Genes that appear on the X chromosome are said to be

An individual who is homozygous dominant for a trait would be represented as

Separation of the inner cell mass from the trophoblast forms the

Figure 20-1 Events in Implantation Use Figure 20-1 to identify the labeled part. -Label A represents which of the following structures?

The purpose of the Human Genome Project (HGP) is to

Which of the following phenotypic characteristics is an example of "codominance"?

The study of the development of the human organism during the first two months after fertilization is called

Sperm carry

The presence of ________ in blood or urine is a reliable indication of pregnancy.

Regarding X-linked traits, if a father with normal color vision has children with a heterozygous mother, what percentage of the daughters will have normal color vision?

If an X-carrying sperm fertilizes an egg, the resulting zygote will be

The period of gestation that is characterized by rapid fetal growth and adipose tissue deposition is the ________ trimester(s).

Figure 20-1 Events in Implantation Use Figure 20-1 to identify the labeled part. -Label H represents which of the following structures?

Regarding lactation and the mammary glands, which statement is true?

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Filters

Exam 20: Development and Inheritance

The hollow cavity within the blastocyst is the

Which of the following is an example of positive feedback during labor?

A relatively common inherited autosomal recessive disorder is

Genes that appear on the X chromosome are said to be

An individual who is homozygous dominant for a trait would be represented as

Separation of the inner cell mass from the trophoblast forms the

Figure 20-1 Events in Implantation Use Figure 20-1 to identify the labeled part. -Label A represents which of the following structures?

The purpose of the Human Genome Project (HGP) is to

Which of the following phenotypic characteristics is an example of "codominance"?

The study of the development of the human organism during the first two months after fertilization is called

Sperm carry

The presence of ________ in blood or urine is a reliable indication of pregnancy.

Regarding X-linked traits, if a father with normal color vision has children with a heterozygous mother, what percentage of the daughters will have normal color vision?

If an X-carrying sperm fertilizes an egg, the resulting zygote will be

The period of gestation that is characterized by rapid fetal growth and adipose tissue deposition is the ________ trimester(s).

Figure 20-1 Events in Implantation Use Figure 20-1 to identify the labeled part. -Label H represents which of the following structures?

Regarding lactation and the mammary glands, which statement is true?

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Filters