Question 1

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 2

The portion of DNA that codes for a particular polypeptide is called a

Accepted Answer

A) genome. 
B) phenotype. 
C) karyotype. 
D) trait. 
E) gene. 
A) genome. 
B) phenotype. 
C) karyotype. 
D) trait. 
E) gene.

Question 3

The mesoderm forms (the)

Accepted Answer

A) muscle. 
B) epidermis. 
C) neural tissues. 
D) mucous epithelium of nasal passageways. 
E) pituitary gland and adrenal medullae. 
A) muscle. 
B) epidermis. 
C) neural tissues. 
D) mucous epithelium of nasal passageways. 
E) pituitary gland and adrenal medullae.

Question 4

Polyspermy is

Accepted Answer

A) when fertilization involves more than one sperm. 
B) when multiple sperm release hyaluronidase concurrently. 
C) the movement of millions of sperm through the female reproductive tract. 
D) the clinical term for an adequate sperm count (more than 20 million per ejaculate). 
E) the process that follows capacitation and enables sperm to bind to sperm receptors. 
A) when fertilization involves more than one sperm. 
B) when multiple sperm release hyaluronidase concurrently. 
C) the movement of millions of sperm through the female reproductive tract. 
D) the clinical term for an adequate sperm count (more than 20 million per ejaculate). 
E) the process that follows capacitation and enables sperm to bind to sperm receptors.

Question 5

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 6

If an individual carries two different alleles of the same gene, he or she is ________ for the trait determined by that gene.

Accepted Answer

A) homologous 
B) homozygous 
C) heterozygous 
D) autosomal 
E) polygenic 
A) homologous 
B) homozygous 
C) heterozygous 
D) autosomal 
E) polygenic

Question 7

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

Accepted Answer

A) blastocoele 
B) blastocyst 
C) trophoblast 
D) developing villi 
E) chorion 
A) blastocoele 
B) blastocyst 
C) trophoblast 
D) developing villi 
E) chorion

Question 8

Which of the following is a hormone secreted by both the placenta and the corpus luteum during pregnancy and functions in suppressing the release of oxytocin?

Accepted Answer

A) progesterone 
B) human chorionic gonadotropin 
C) relaxin 
D) placental prolactin 
E) estrogen 
A) progesterone 
B) human chorionic gonadotropin 
C) relaxin 
D) placental prolactin 
E) estrogen

Question 9

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 10

The stage of labor during which the fetus begins to shift toward the cervical canal is the

Accepted Answer

A) emergence stage. 
B) dilation stage. 
C) placental stage. 
D) expulsion stage. 
E) fetal stage. 
A) emergence stage. 
B) dilation stage. 
C) placental stage. 
D) expulsion stage. 
E) fetal stage.

Question 11

If the gonads fail to develop very early during human development, the contributions of which germ layer may be deficient?

Accepted Answer

A) epiderm 
B) ectoderm 
C) periderm 
D) endoderm 
E) mesoderm 
A) epiderm 
B) ectoderm 
C) periderm 
D) endoderm 
E) mesoderm

Question 12

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

Accepted Answer

A) blastocoele 
B) blastocyst 
C) trophoblast 
D) developing villi 
E) chorion 
A) blastocoele 
B) blastocyst 
C) trophoblast 
D) developing villi 
E) chorion

Question 13

In polygenic inheritance,

Accepted Answer

A) phenotypic characteristics are always controlled by genes on a single chromosome. 
B) phenotypic characteristics are determined by interactions among several genes. 
C) phenotypic characteristics are determined by the genes on the Y chromosome. 
D) phenotypic characteristics are determined by a single pair of alleles. 
E) phenotypic characteristics are determined by the action of a single gene. 
A) phenotypic characteristics are always controlled by genes on a single chromosome. 
B) phenotypic characteristics are determined by interactions among several genes. 
C) phenotypic characteristics are determined by the genes on the Y chromosome. 
D) phenotypic characteristics are determined by a single pair of alleles. 
E) phenotypic characteristics are determined by the action of a single gene.

Question 14

Individuals with ________ have only one sex chromosome, and it is an X chromosome.

Accepted Answer

A) Trisomy 21 
B) Down's syndrome 
C) Turner's syndrome 
D) Fragile-X syndrome 
E) Klinefelter's syndrome 
A) Trisomy 21 
B) Down's syndrome 
C) Turner's syndrome 
D) Fragile-X syndrome 
E) Klinefelter's syndrome

Question 15

An allele that is ________ will be expressed only if it is present on both chromosomes of a homologous pair.

Accepted Answer

A) dominant 
B) recessive 
C) incomplete 
D) phenotypic 
E) autosomal 
A) dominant 
B) recessive 
C) incomplete 
D) phenotypic 
E) autosomal

Question 16

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 17

The period from birth to the end of the first month is known as (the)

Accepted Answer

A) senescence. 
B) neonatal period. 
C) infancy. 
D) childhood. 
E) embryogenesis. 
A) senescence. 
B) neonatal period. 
C) infancy. 
D) childhood. 
E) embryogenesis.

Question 18

Match the gestational age with the corresponding prenatal development.

Accepted Answer

A) 1 month / mammary glands develop 
B) 2 months / movement of fetus can be felt by mother 
C) 3 months / formation of the gonads, ducts, and genitalia 
D) 4 months / eye and ear formation 
E) 5 months / migration of lymphocytes to lymphoid organs 
A) 1 month / mammary glands develop 
B) 2 months / movement of fetus can be felt by mother 
C) 3 months / formation of the gonads, ducts, and genitalia 
D) 4 months / eye and ear formation 
E) 5 months / migration of lymphocytes to lymphoid organs

Question 19

The chorionic villi

Accepted Answer

A) help prepare the mammary glands for milk production. 
B) are free endodermal tips that grow toward the wall of the blastocyst. 
C) bulge into the amniotic cavity at the head fold and extend toward the trophoblast. 
D) provide the surface area for gaseous exchange between fetal and maternal bloodstreams. 
E) form constrictions that narrow the yolk stalk and the body stalk between the embryo and the surrounding trophoblast. 
A) help prepare the mammary glands for milk production. 
B) are free endodermal tips that grow toward the wall of the blastocyst. 
C) bulge into the amniotic cavity at the head fold and extend toward the trophoblast. 
D) provide the surface area for gaseous exchange between fetal and maternal bloodstreams. 
E) form constrictions that narrow the yolk stalk and the body stalk between the embryo and the surrounding trophoblast.

Question 20

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.

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

The portion of DNA that codes for a particular polypeptide is called a

The mesoderm forms (the)

Polyspermy is

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 individual carries two different alleles of the same gene, he or she is ________ for the trait determined by that gene.

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

Which of the following is a hormone secreted by both the placenta and the corpus luteum during pregnancy and functions in suppressing the release of oxytocin?

Separation of the inner cell mass from the trophoblast forms the

The stage of labor during which the fetus begins to shift toward the cervical canal is the

If the gonads fail to develop very early during human development, the contributions of which germ layer may be deficient?

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

In polygenic inheritance,

Individuals with ________ have only one sex chromosome, and it is an X chromosome.

An allele that is ________ will be expressed only if it is present on both chromosomes of a homologous pair.

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

The period from birth to the end of the first month is known as (the)

Match the gestational age with the corresponding prenatal development.

The chorionic villi

Sperm carry

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

The portion of DNA that codes for a particular polypeptide is called a

The mesoderm forms (the)

Polyspermy is

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 individual carries two different alleles of the same gene, he or she is ________ for the trait determined by that gene.

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

Which of the following is a hormone secreted by both the placenta and the corpus luteum during pregnancy and functions in suppressing the release of oxytocin?

Separation of the inner cell mass from the trophoblast forms the

The stage of labor during which the fetus begins to shift toward the cervical canal is the

If the gonads fail to develop very early during human development, the contributions of which germ layer may be deficient?

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

In polygenic inheritance,

Individuals with ________ have only one sex chromosome, and it is an X chromosome.

An allele that is ________ will be expressed only if it is present on both chromosomes of a homologous pair.

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

The period from birth to the end of the first month is known as (the)

Match the gestational age with the corresponding prenatal development.

The chorionic villi

Sperm carry

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