Question 1

Gastrulation is the process of development that produces the

Accepted Answer

A)  placenta.
B)  embryonic disk.
C)  germ layers.
D)  rudimentary organs.E) C) and D)
F) B) and D)

Question 2

A display of the chromosomes of a somatic cell during metaphase of mitosis is the

Accepted Answer

A)  karyotype.
B)  autosome.
C)  homolog.
D)  locus.
E)  genome.F) C) and E)
G) A) and D)

Question 3

Pulling to a standing position is a typical milestone for which age?

Accepted Answer

A)  6 weeks
B)  6 months
C)  12 weeks
D)  12 months
E)  18 weeksF) B) and E)
G) A) and B)

Question 4

Failure of the neural tube to close in the region of the head results in

Accepted Answer

A)  anencephaly.
B)  ventricular enlargement.
C)  cleft palate.
D)  soft spots on the skull.
E)  hydrocephaly.F) C) and D)
G) B) and E)

Question 5

If an albino (aa) mates with a person homozygous for normal pigment (AA) ,

Accepted Answer

A)  half of the offspring are normal.
B)  half of the offspring are albinos.
C)  all offspring are normal.
D)  all offspring are albinos.
E)  None of these choices is correct.F) A) and D)
G) A) and C)

Question 6

Many of the emotional characteristics of a person are formed during

Accepted Answer

A)  infancy.
B)  early childhood.
C)  adolescence.
D)  adulthood.
E)  neonatal period.F) A) and D)
G) C) and D)

Question 7

What term describes the inheritance of a trait which in the heterozygote has an intermediate expression between either allele?

Accepted Answer

A)  Incomplete penetrance
B)  Incomplete dominance
C)  Complete dominance
D)  CodominanceE) B) and C)
F) A) and D)

Question 8

If a woman ovulates two oocytes and both are fertilized,

Accepted Answer

A)  identical twins result.
B)  fraternal twins result.
C)  Siamese twins result.
D)  monozygotic twinning occurs.
E)  paternal twins result.F) D) and E)
G) A) and D)

Question 9

The single layer of cells that surrounds the blastocele is the

Accepted Answer

A)  morula.
B)  gastrula.
C)  blastocyst.
D)  trophoblast.
E)  inner cell mass.F) A) and E)
G) B) and E)

Question 10

A patent ductus arteriosus means that the _____ did not close.

Accepted Answer

A)  intraatrial septum
B)  intraventricular septum
C)  connection between the pulmonary trunk and the aorta
D)  connection between the inferior vena cava and the abdominal aorta
E)  umbilical arteries and veinsF) A) and D)
G) C) and D)

Question 11

What genetic disorder is a type of dwarfism characterized by shortening of the upper and lower limbs?

Accepted Answer

A)  albinism
B)  sickle-cell disease
C)  hemophilia
D)  Down syndrome
E)  achondroplasiaF) C) and D)
G) A) and B)

Question 12

Which of the following statements concerning the digestive system of a newborn is true?

Accepted Answer

A)  The infant may lose 15% to 20% of his body weight in the first week.
B)  The pH of the stomach is nearly neutral,but increases in acidity after birth.
C)  The liver of the newborn is functionally mature.
D)  The ability to digest lactose does not occur until 48 hours after birth.
E)  All foods can be digested at birth.F) All of the above
G) B) and E)

Question 13

A person's height,intelligence,eye color,and skin color are examples of

Accepted Answer

A)  incomplete dominance.
B)  complete dominance.
C)  complete recessiveness.
D)  codominance.
E)  polygenic traits.F) B) and C)
G) A) and E)

Question 14

The adult kidney develops from the

Accepted Answer

A)  pronephros.
B)  metanephros.
C)  mesonephros.
D)  allantois.
E)  neonephros.F) B) and D)
G) All of the above

Question 15

In some neonates the foramen ovale does not close to form the fossa ovalis.This would be called a(n) _____.

Accepted Answer

A)  mutation
B)  congenital disorder
C)  teratogen
D)  genetic anomalyE) A) and B)
F) All of the above

Question 16

The process of forming three germ layers from the embryonic disk is called ______.

Accepted Answer

A)  gastrulation
B)  differentiation
C)  fertilization
D)  meiosis
E)  implantationF) A) and D)
G) A) and C)

Question 17

One component of brain death is defined as

Accepted Answer

A)  loss of reflexes.
B)  lack of spontaneous movement.
C)  a flat electroencephalogram (EEG) .D) All of the above
E) B) and C)

Question 18

Autoimmune diseases such as arthritis become more common as people get older."Autoimmune" means that the immune system

Accepted Answer

A)  no longer produces antibodies.
B)  destroys the body's own tissues.
C)  is incapable of initiating phagocytosis.
D)  produces T cells but no B cells.
E)  protects itself.F) A) and B)
G) A) and E)

Question 19

What is the acrosomal reaction?

Accepted Answer

A)  The formation of the acrosome in the epididymis
B)  The activation of enzymes for action on the surface of the egg
C)  The release of ADP from the mitochondria on the midpiece
D)  The release of prostatic fluid to produce the semenE) C) and D)
F) None of the above

Question 20

A different form of an allele at a particular locus that can have no effect to major effects on the phenotype is a(n)

Accepted Answer

A)  allelic variant.
B)  mutated allele.
C)  polymorphism.
D)  All of the choices are correct.E) A) and C)
F) C) and D)

Exam 29: Development,growth,aging,and Genetics

What genetic disorder is a type of dwarfism characterized by shortening of the upper and lower limbs?

Correct AnswerverifiedShow Answer

Autoimmune diseases such as arthritis become more common as people get older."Autoimmune" means that the immune system

Correct AnswerverifiedShow Answer

A display of the chromosomes of a somatic cell during metaphase of mitosis is the

Correct AnswerverifiedShow Answer

A different form of an allele at a particular locus that can have no effect to major effects on the phenotype is a(n)

Correct AnswerverifiedShow Answer

The process of forming three germ layers from the embryonic disk is called ______.

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If a woman ovulates two oocytes and both are fertilized,

Correct AnswerverifiedShow Answer

Many of the emotional characteristics of a person are formed during

Correct AnswerverifiedShow Answer

In some neonates the foramen ovale does not close to form the fossa ovalis.This would be called a(n) _____.

Correct AnswerverifiedShow Answer

If an albino (aa) mates with a person homozygous for normal pigment (AA) ,

Correct AnswerverifiedShow Answer

Gastrulation is the process of development that produces the

Correct AnswerverifiedShow Answer

What term describes the inheritance of a trait which in the heterozygote has an intermediate expression between either allele?

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What is the acrosomal reaction?

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Failure of the neural tube to close in the region of the head results in

Correct AnswerverifiedShow Answer

A patent ductus arteriosus means that the _____ did not close.

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A person's height,intelligence,eye color,and skin color are examples of

Correct AnswerverifiedShow Answer

One component of brain death is defined as

Correct AnswerverifiedShow Answer

Which of the following statements concerning the digestive system of a newborn is true?

Correct AnswerverifiedShow Answer

Pulling to a standing position is a typical milestone for which age?

Correct AnswerverifiedShow Answer

The single layer of cells that surrounds the blastocele is the

Correct AnswerverifiedShow Answer

The adult kidney develops from the

Correct AnswerverifiedShow Answer

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