Question 1

During gestation,contraction of the myometrium is inhibited by ________,produced by the corpus luteum.

Accepted Answer

A) progesterone 
B) estrogen 
C) oxytocin 
D) prostaglandins 
E) inhibin 
A) progesterone 
B) estrogen 
C) oxytocin 
D) prostaglandins 
E) inhibin

Question 2

Figure 29-1 Early Human Development
Use Figure 29-1 to answer the following questions:
-Identify the structures labeled "4."

Accepted Answer

A) zygotic twins 
B) morula 
C) blastomere 
D) trophoblast 
E) polar bodies 
A) zygotic twins 
B) morula 
C) blastomere 
D) trophoblast 
E) polar bodies

Question 3

Under the influence of the trophoblast,maternal blood vessels in the endometrium

Accepted Answer

A) disappear. 
B) attach to the inner cell mass. 
C) break down and form sinuses or lacunae. 
D) form a capillary network in the trophoblast. 
E) increase in size and penetrate the blastocyst. 
A) disappear. 
B) attach to the inner cell mass. 
C) break down and form sinuses or lacunae. 
D) form a capillary network in the trophoblast. 
E) increase in size and penetrate the blastocyst.

Question 4

Non-sex chromosomes are called

Accepted Answer

A) homologous. 
B) homozygous. 
C) heterozygous. 
D) autosomal. 
E) chromatids. 
A) homologous. 
B) homozygous. 
C) heterozygous. 
D) autosomal. 
E) chromatids.

Question 5

The Y chromosome carries information for

Accepted Answer

A) the penis. 
B) the development of the brain. 
C) sexual drive. 
D) fertility ability. 
E) the development of the testes. 
A) the penis. 
B) the development of the brain. 
C) sexual drive. 
D) fertility ability. 
E) the development of the testes.

Question 6

Differentiation among blastomeres is the result of

Accepted Answer

A) enzymes introduced by the sperm. 
B) hormones produced by the ovum. 
C) an unequal distribution of regulatory molecules in the cytoplasm of the ovum. 
D) regulator molecules supplied by cells of the uterus. 
E) enzymes activated by the sperm. 
A) enzymes introduced by the sperm. 
B) hormones produced by the ovum. 
C) an unequal distribution of regulatory molecules in the cytoplasm of the ovum. 
D) regulator molecules supplied by cells of the uterus. 
E) enzymes activated by the sperm.

Question 7

________ are nearly identical cells that are produced by early cleavages.

Accepted Answer

A) Blastomeres 
B) Morulas 
C) Gastrulas 
D) Amnions 
E) Blastulas 
A) Blastomeres 
B) Morulas 
C) Gastrulas 
D) Amnions 
E) Blastulas

Question 8

Which of the following statements concerning development is false?

Accepted Answer

A) The term induction refers to the chemical interplay between developing cells. 
B) The developing oocyte receives molecules that affect development from the surrounding granulosa cells. 
C) Each blastomere in the blastula receives exactly the same cytoplasmic composition. 
D) Differences in a cell's cytoplasmic makeup affect the cell's genetic activity. 
E) Cells release molecules that affect the developmental process of neighboring cells. 
A) The term induction refers to the chemical interplay between developing cells. 
B) The developing oocyte receives molecules that affect development from the surrounding granulosa cells. 
C) Each blastomere in the blastula receives exactly the same cytoplasmic composition. 
D) Differences in a cell's cytoplasmic makeup affect the cell's genetic activity. 
E) Cells release molecules that affect the developmental process of neighboring cells.

Question 9

Genes that appear on the X chromosome are said to be

Accepted Answer

A) somatic. 
B) polygenic. 
C) X-linked. 
D) autosomal. 
E) chromosomal. 
A) somatic. 
B) polygenic. 
C) X-linked. 
D) autosomal. 
E) chromosomal.

Question 10

The clear liquid secreted by the mammary glands before milk production begins is called

Accepted Answer

A) milk. 
B) colostrum. 
C) serum. 
D) plasma. 
E) peritoneal. 
A) milk. 
B) colostrum. 
C) serum. 
D) plasma. 
E) peritoneal.

Question 11

In simple autosomal inheritance,phenotypic characters are determined,or controlled,by

Accepted Answer

A) a single pair of alleles. 
B) multiple alleles. 
C) the action of a single gene. 
D) regulator genes on a different chromosome. 
E) the genes on the Y chromosome. 
A) a single pair of alleles. 
B) multiple alleles. 
C) the action of a single gene. 
D) regulator genes on a different chromosome. 
E) the genes on the Y chromosome.

Question 12

Figure 29-2 Fetus at 10 Weeks
Use Figure 29-2 to answer the following questions:
-Identify the structure labeled "7."

Accepted Answer

A) amnion 
B) chorion 
C) decidua basalis 
D) placenta 
E) endometrium 
A) amnion 
B) chorion 
C) decidua basalis 
D) placenta 
E) endometrium

Question 13

Contact of a sperm with the oocyte membrane causes

Accepted Answer

A) oocyte activation. 
B) completion of the second meiosis. 
C) extrusion of the second polar body. 
D) membrane fusion. 
E) All of the answers are correct. 
A) oocyte activation. 
B) completion of the second meiosis. 
C) extrusion of the second polar body. 
D) membrane fusion. 
E) All of the answers are correct.

Question 14

The extraembryonic membrane that forms the fetal portion of the placenta is the

Accepted Answer

A) yolk sac. 
B) amnion. 
C) allantois. 
D) chorion. 
E) decidua. 
A) yolk sac. 
B) amnion. 
C) allantois. 
D) chorion. 
E) decidua.

Question 15

If both parents are heterozygous dominant for a trait,what is the probability of an offspring inheriting the recessive trait?

Accepted Answer

A) 10% 
B) 25% 
C) 50% 
D) 75% 
E) 100% 
A) 10% 
B) 25% 
C) 50% 
D) 75% 
E) 100%

Question 16

The alternate forms of any one gene are called

Accepted Answer

A) homologous. 
B) homozygous. 
C) heterozygous. 
D) autosomes. 
E) alleles. 
A) homologous. 
B) homozygous. 
C) heterozygous. 
D) autosomes. 
E) alleles.

Question 17

The infancy stage of life is considered to be over at

Accepted Answer

A) 3 months 
B) age 2. 
C) 6 months. 
D) 1 month. 
E) 18 months. 
A) 3 months 
B) age 2. 
C) 6 months. 
D) 1 month. 
E) 18 months.

Question 18

The period of gestation that is characterized by rapid fetal growth and fat deposition is the ________ trimester.

Accepted Answer

A) first 
B) second 
C) third 
A) first 
B) second 
C) third

Question 19

A space opens within the inner cell mass that will form 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 20

The inner cell mass of the blastocyst will

Accepted Answer

A) form the placenta. 
B) form the morula. 
C) form the embryo. 
D) form blood vessels of the placenta. 
E) provide nutrients for early growth. 
A) form the placenta. 
B) form the morula. 
C) form the embryo. 
D) form blood vessels of the placenta. 
E) provide nutrients for early growth.

Exam 29: Development and Inheritance

During gestation,contraction of the myometrium is inhibited by ________,produced by the corpus luteum.

Figure 29-1 Early Human Development Use Figure 29-1 to answer the following questions: -Identify the structures labeled "4."

Under the influence of the trophoblast,maternal blood vessels in the endometrium

Non-sex chromosomes are called

The Y chromosome carries information for

Differentiation among blastomeres is the result of

________ are nearly identical cells that are produced by early cleavages.

Which of the following statements concerning development is false?

Genes that appear on the X chromosome are said to be

The clear liquid secreted by the mammary glands before milk production begins is called

In simple autosomal inheritance,phenotypic characters are determined,or controlled,by

Figure 29-2 Fetus at 10 Weeks Use Figure 29-2 to answer the following questions: -Identify the structure labeled "7."

Contact of a sperm with the oocyte membrane causes

The extraembryonic membrane that forms the fetal portion of the placenta is the

If both parents are heterozygous dominant for a trait,what is the probability of an offspring inheriting the recessive trait?

The alternate forms of any one gene are called

The infancy stage of life is considered to be over at

The period of gestation that is characterized by rapid fetal growth and fat deposition is the ________ trimester.

A space opens within the inner cell mass that will form the

The inner cell mass of the blastocyst will

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

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