Question 1

What genetic disorder is caused by having three chromosomes 21?

Accepted Answer

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

Question 2

APGAR scores are used to

Accepted Answer

A)   evaluate a newborn's weight.
B)   assess a newborn's physiological condition.
C)   measure a newborn's genetic state.
D)   determine the developmental age of the infant.
E)   measure the infant.F) C) and D)
G) A) and C)

Question 3

Somites give rise to

Accepted Answer

A)   nerves.
B)   blood.
C)   glands.
D)   muscles.
E)   spinal cord.F) A) and E)
G) B) and E)

Question 4

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 C)
F) All of the above

Question 5

Which of the following is derived from ectoderm?

Accepted Answer

A)   lens of the eye
B)   thymus gland
C)   tonsils
D)   urinary bladder
E)   dermis of skinF) A) and D)
G) A) and E)

Question 6

What is formed by closure of neural groove?

Accepted Answer

A)   mesonephros
B)   mandibular processes
C)   neural tube
D)   secondary palate
E)   somitesF) D) and E)
G) A) and E)

Question 7

Which of the following is involved in stimulating milk letdown?

Accepted Answer

A)   increased estrogen levels
B)   increased progesterone levels
C)   mechanical stimulation of the breasts that cause release of oxytocin
D)   secretion of a small amount of milk
E)   None of these choices is correctF) A) and E)
G) A) and D)

Question 8

Which germ layer is the epidermis derived from?

Accepted Answer

A)   ectoderm
B)   mesoderm
C)   endodermD) All of the above
E) None of the above

Question 9

The onset of puberty is considered to be the beginning of which life stage?

Accepted Answer

A)   early childhood
B)   late childhood
C)   adolescence
D)   young adult
E)   middle ageF) D) and E)
G) B) and D)

Question 10

Premature aging is called

Accepted Answer

A)   progeria.
B)   lactation.
C)   parturition.
D)   Alzheimer's disease.
E)   dementia.F) A) and B)
G) C) and E)

Question 11

Which of the following genotypes will result in a male?

Accepted Answer

A)   XO
B)   XY
C)   XX
D)   XXX
E)   YYF) A) and B)
G) All of the above

Question 12

The common junction of the digestive, urinary, and genital systems is the

Accepted Answer

A)   cloaca.
B)   coelom.
C)   allantois.
D)   hindgut.
E)   anus.F) A) and B)
G) A) and C)

Question 13

If neither testosterone nor mullerian-inhibiting hormone is secreted during embryonic development

Accepted Answer

A)   the paramesonephric duct system degenerates.
B)   the mesonephric duct system is stimulated.
C)   internally female reproductive structures form.
D)   the individual appears as a male.
E)   internally male reproductive structures form.F) A) and B)
G) A) and D)

Question 14

A non-albino female who is a carrier for the albino allele (Aa) , mates with an albino (aa)  male. What is the probability that their children will be albino?

Accepted Answer

A)   0%
B)   25%
C)   50%
D)   75%
E)   100%F) All of the above
G) A) and D)

Question 15

What term means that both alleles are the same?

Accepted Answer

A)   locus
B)   alleles
C)   homozygous
D)   heterozygous
E)   karyotypeF) B) and C)
G) A) and E)

Question 16

The closed foramen ovale becomes the _____ after birth.

Accepted Answer

A)   fossa ovalis
B)   ligamentum ovale
C)   ligamentum venosum
D)   ligamentum arteriosum
E)   valvesF) A) and B)
G) None of the above

Question 17

The genotype WW is best described as

Accepted Answer

A)   homozygous recessive.
B)   homozygous dominant.
C)   heterozygous dominant.
D)   heterozygous recessive.
E)   homorecessive.F) All of the above
G) A) and D)

Question 18

Which of the following statements concerning development of the integumentary system is true?

Accepted Answer

A)   The epidermis is derived from mesoderm.
B)   The melanocytes are derived from ectoderm.
C)   Nails, hair, and glands develop from the dermis.
D)   Sensory receptors in the skin are derived from the epidermis.
E)   Collagen fibers do not appear until after birth.F) None of the above
G) A) and C)

Question 19

The actual genetic constitution of an individual is its

Accepted Answer

A)   structural gene.
B)   autosome.
C)   genotype.
D)   polygenic.
E)   y-linked.F) A) and B)
G) A) and C)

Question 20

The major organ systems develop during the germinal prenatal period.

Accepted Answer

A) True 
 B)False

Exam 29: Development, Growth, Aging, and Genetics

Which germ layer is the epidermis derived from?

Correct AnswerverifiedShow Answer

If neither testosterone nor mullerian-inhibiting hormone is secreted during embryonic development

Correct AnswerverifiedShow Answer

Premature aging is called

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

What is formed by closure of neural groove?

Correct AnswerverifiedShow Answer

APGAR scores are used to

Correct AnswerverifiedShow Answer

The major organ systems develop during the germinal prenatal period.

Correct AnswerverifiedShow Answer

What term means that both alleles are the same?

Correct AnswerverifiedShow Answer

The onset of puberty is considered to be the beginning of which life stage?

Correct AnswerverifiedShow Answer

Which of the following statements concerning development of the integumentary system is true?

Correct AnswerverifiedShow Answer

The common junction of the digestive, urinary, and genital systems is the

Correct AnswerverifiedShow Answer

The closed foramen ovale becomes the _____ after birth.

Correct AnswerverifiedShow Answer

The genotype WW is best described as

Correct AnswerverifiedShow Answer

Somites give rise to

Correct AnswerverifiedShow Answer

Which of the following is involved in stimulating milk letdown?

Correct AnswerverifiedShow Answer

What genetic disorder is caused by having three chromosomes 21?

Correct AnswerverifiedShow Answer

Which of the following is derived from ectoderm?

Correct AnswerverifiedShow Answer

Which of the following genotypes will result in a male?

Correct AnswerverifiedShow Answer

The actual genetic constitution of an individual is its

Correct AnswerverifiedShow Answer

A non-albino female who is a carrier for the albino allele (Aa) , mates with an albino (aa) male. What is the probability that their children will be albino?

Correct AnswerverifiedShow Answer

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