Question 1

Identical twins that share body structures are called Siamese or ________ twins.

Accepted Answer

A) zygotic 
B) attached 
C) conjoined 
D) nonidentical 
E) partotic 
A) zygotic 
B) attached 
C) conjoined 
D) nonidentical 
E) partotic

Question 2

A 5-6-kg (11-13-lb)infant usually requires about ________ of milk per day.

Accepted Answer

A) 250 ml 
B) 1)5 quarts 
C) 100 ml 
D) 850 ml 
E) 1 cup 
A) 250 ml 
B) 1)5 quarts 
C) 100 ml 
D) 850 ml 
E) 1 cup

Question 3

Where in the embryo does mesoderm first appear?

Accepted Answer

A) between the cell layers of the inner cell mass 
B) within the blastocoele 
C) in the chorionic villi 
D) above the epiblast 
E) around the trophoblast 
A) between the cell layers of the inner cell mass 
B) within the blastocoele 
C) in the chorionic villi 
D) above the epiblast 
E) around the trophoblast

Question 4

If an individual carries a pair of alleles that are the same,the individual is ________ for the trait.

Accepted Answer

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

Question 5

The ________ is formed by the allantois,blood vessels,and yolk sac.

Accepted Answer

A) umbilical cord 
B) chorion 
C) chorioallantoic membrane 
D) trophoblast 
E) amnion 
A) umbilical cord 
B) chorion 
C) chorioallantoic membrane 
D) trophoblast 
E) amnion

Question 6

The blood vessel that carries oxygenated blood away from the placenta is the

Accepted Answer

A) umbilical vein. 
B) iliac veins. 
C) umbilical arteries. 
D) uterine veins. 
E) uterine arteries. 
A) umbilical vein. 
B) iliac veins. 
C) umbilical arteries. 
D) uterine veins. 
E) uterine arteries.

Question 7

________ is the percentage of individuals with a particular genotype that actually show the "expected" phenotype.

Accepted Answer

A) Blending 
B) Penetrance 
C) Codominance 
D) Genome imprinting 
E) Pangenesis 
A) Blending 
B) Penetrance 
C) Codominance 
D) Genome imprinting 
E) Pangenesis

Question 8

The mesoderm forms

Accepted Answer

A) muscle. 
B) epidermis. 
C) the brain. 
D) the lining of the digestive tract. 
E) respiratory epithelium. 
A) muscle. 
B) epidermis. 
C) the brain. 
D) the lining of the digestive tract. 
E) respiratory epithelium.

Question 9

Stretching of the cervix causes an increase in the blood levels of

Accepted Answer

A) estrogen. 
B) progesterone. 
C) oxytocin. 
D) relaxin. 
E) chorionic gonadotropin. 
A) estrogen. 
B) progesterone. 
C) oxytocin. 
D) relaxin. 
E) chorionic gonadotropin.

Question 10

The developmental period that is the period of all embryological and early fetal development is

Accepted Answer

A) the first trimester. 
B) the second trimester. 
C) the third trimester. 
D) infancy. 
E) adolescence. 
A) the first trimester. 
B) the second trimester. 
C) the third trimester. 
D) infancy. 
E) adolescence.

Question 11

How many chromosomes do human somatic cells contain?

Accepted Answer

A) 12 
B) 23 
C) 46 
D) 92 
E) 6 
A) 12 
B) 23 
C) 46 
D) 92 
E) 6

Question 12

During gastrulation,

Accepted Answer

A) the blastomeres fuse. 
B) the placenta penetrates the endometrium. 
C) three germ layers are formed. 
D) cells from the hypoblast move to the epiblast. 
E) the neural tube closes. 
A) the blastomeres fuse. 
B) the placenta penetrates the endometrium. 
C) three germ layers are formed. 
D) cells from the hypoblast move to the epiblast. 
E) the neural tube closes.

Question 13

The full set of genetic information in an individual's chromosomes is called

Accepted Answer

A) pleiotype. 
B) allotype. 
C) phenotype. 
D) isotype. 
E) genome. 
A) pleiotype. 
B) allotype. 
C) phenotype. 
D) isotype. 
E) genome.

Question 14

Polyspermia is prevented by the ________ reaction.

Accepted Answer

A) metabolic 
B) gamete 
C) gollumina 
D) cortical 
E) polarity 
A) metabolic 
B) gamete 
C) gollumina 
D) cortical 
E) polarity

Question 15

Sperm cannot fertilize an oocyte until they

Accepted Answer

A) undergo capacitation. 
B) undergo meiosis. 
C) lose their flagellum. 
D) are in the vagina for 3 days. 
E) are activated by sustentacular cells of the vagina. 
A) undergo capacitation. 
B) undergo meiosis. 
C) lose their flagellum. 
D) are in the vagina for 3 days. 
E) are activated by sustentacular cells of the vagina.

Question 16

The blood vessels that carry deoxygenated blood to the placenta are the

Accepted Answer

A) umbilical veins. 
B) iliac veins. 
C) umbilical arteries. 
D) uterine veins. 
E) uterine arteries. 
A) umbilical veins. 
B) iliac veins. 
C) umbilical arteries. 
D) uterine veins. 
E) uterine arteries.

Question 17

The prostaglandins produced in the endometrium

Accepted Answer

A) initiate the release of oxytocin for parturition. 
B) stimulate smooth muscle contractions. 
C) initiate secretory activity in the mammary glands. 
D) promote breast development. 
E) All of the answers are correct. 
A) initiate the release of oxytocin for parturition. 
B) stimulate smooth muscle contractions. 
C) initiate secretory activity in the mammary glands. 
D) promote breast development. 
E) All of the answers are correct.

Question 18

The penetration of the endometrium by the blastocyst is referred to as

Accepted Answer

A) cleavage. 
B) implantation. 
C) placentation. 
D) embryogenesis. 
E) fertilization. 
A) cleavage. 
B) implantation. 
C) placentation. 
D) embryogenesis. 
E) fertilization.

Question 19

Which of the following does not occur at puberty?

Accepted Answer

A) FSH levels rise. 
B) GnRH levels decline. 
C) Levels of sex hormones rise. 
D) Gametogenesis begins. 
E) Secondary sexual characteristics begin to develop. 
A) FSH levels rise. 
B) GnRH levels decline. 
C) Levels of sex hormones rise. 
D) Gametogenesis begins. 
E) Secondary sexual characteristics begin to develop.

Question 20

The process of cell division that divides the cytoplasm of the zygote among blastomeres is called

Accepted Answer

A) cleavage. 
B) implantation. 
C) placentation. 
D) embryogenesis. 
E) blastulation. 
A) cleavage. 
B) implantation. 
C) placentation. 
D) embryogenesis. 
E) blastulation.

Exam 29: Development and Inheritance

Identical twins that share body structures are called Siamese or ________ twins.

A 5-6-kg (11-13-lb)infant usually requires about ________ of milk per day.

Where in the embryo does mesoderm first appear?

If an individual carries a pair of alleles that are the same,the individual is ________ for the trait.

The ________ is formed by the allantois,blood vessels,and yolk sac.

The blood vessel that carries oxygenated blood away from the placenta is the

________ is the percentage of individuals with a particular genotype that actually show the "expected" phenotype.

The mesoderm forms

Stretching of the cervix causes an increase in the blood levels of

The developmental period that is the period of all embryological and early fetal development is

How many chromosomes do human somatic cells contain?

During gastrulation,

The full set of genetic information in an individual's chromosomes is called

Polyspermia is prevented by the ________ reaction.

Sperm cannot fertilize an oocyte until they

The blood vessels that carry deoxygenated blood to the placenta are the

The prostaglandins produced in the endometrium

The penetration of the endometrium by the blastocyst is referred to as

Which of the following does not occur at puberty?

The process of cell division that divides the cytoplasm of the zygote among blastomeres is called

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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