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NSG3280 Pathophysiology for Nurses I |
Questions and Answers | Grade A | Correct
(Verified Solutions)
An ordered photographic display of a set of chromosomes from a single cell is
a(n):
A) Metaphase spread.
B) Autosomal spread.
C) Karyotype.
D) Anaphase spread.
ANSWER: c
An error in which homologous chromosomes fail to separate during meiosis is
termed:
A) Aneuploidy.
B) Nondisjunction.
C) Polyploidy.
D) anaplasia.
ANSWER: b
A somatic cell that does not contain a multiple of 23 chromosomes is called:
A) an aneuploid cell.
B) a euploid cell.
C) a polyploidy cell.
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D) a haploid cell.
ANSWER: a
A 20-year-old pregnant female gives birth to a stillborn child. Autopsy reveals
that the fetus has 92 chromosomes. Which of the following describes this
condition?
A) Euploidy
B) Triploidy
C) Tetraploidy
D) Aneuploidy
ANSWER: c
If a person is a chromosomal mosaic, the person may:
A) be a carrier of the genetic disease.
B) have a mild form of the genetic disease.
C) have two genetic diseases.
D) be sterile as a result of the genetic disease.
ANSWER: b
The most common cause of Down syndrome is:
A) paternal nondisjunction.
B) maternal translocations.
C) maternal nondisjunction.
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D) paternal translocations.
ANSWER: c
Risk factors for Down syndrome include:
A) fetal exposure to mutagens in the uterus.
B) increased paternal age.
C) family history of Down syndrome.
D) pregnancy in women over age 35.
ANSWER: d
A 13-year-old girl has a karyotype that reveals an absent homologous X
chromosome with only a single X chromosome present. Her condition is
called:
A) Down syndrome.
B) Cri du chat syndrome.
C) Turner syndrome.
D) Edward syndrome
ANSWER: c
A child is diagnosed with cystic fibrosis. History reveals that the child's
parents are first cousins. Cystic fibrosis was most likely the result of:
A) X inactivation.
B) genomic imprinting.
C) consanguinity.
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D) obligate carriers.
ANSWER: c
Joey, age 9, is admitted to a pediatric unit with Duchenne muscular
dystrophy. He inherited this condition through a:
A) sex-linked dominant trait.
B) sex-influenced trait.
C) sex-limited trait.
D) sex-linked recessive trait.
ANSWER: d
A 50-year-old male was recently diagnosed with Huntington disease.
Transmission of this disease is associated with:
A) penetrance.
B) recurrence risk.
C) expressivity.
D) delayed age of onset.
ANSWER: d
People who have neurofibromatosis will show varying degrees of the disease;
this is because of the genetic principle of:
A) penetrance.
B) expressivity.
C) dominance.
NSG3280 Pathophysiology for Nurses I |
Questions and Answers | Grade A | Correct
(Verified Solutions)
An ordered photographic display of a set of chromosomes from a single cell is
a(n):
A) Metaphase spread.
B) Autosomal spread.
C) Karyotype.
D) Anaphase spread.
ANSWER: c
An error in which homologous chromosomes fail to separate during meiosis is
termed:
A) Aneuploidy.
B) Nondisjunction.
C) Polyploidy.
D) anaplasia.
ANSWER: b
A somatic cell that does not contain a multiple of 23 chromosomes is called:
A) an aneuploid cell.
B) a euploid cell.
C) a polyploidy cell.
,2|Page
D) a haploid cell.
ANSWER: a
A 20-year-old pregnant female gives birth to a stillborn child. Autopsy reveals
that the fetus has 92 chromosomes. Which of the following describes this
condition?
A) Euploidy
B) Triploidy
C) Tetraploidy
D) Aneuploidy
ANSWER: c
If a person is a chromosomal mosaic, the person may:
A) be a carrier of the genetic disease.
B) have a mild form of the genetic disease.
C) have two genetic diseases.
D) be sterile as a result of the genetic disease.
ANSWER: b
The most common cause of Down syndrome is:
A) paternal nondisjunction.
B) maternal translocations.
C) maternal nondisjunction.
,3|Page
D) paternal translocations.
ANSWER: c
Risk factors for Down syndrome include:
A) fetal exposure to mutagens in the uterus.
B) increased paternal age.
C) family history of Down syndrome.
D) pregnancy in women over age 35.
ANSWER: d
A 13-year-old girl has a karyotype that reveals an absent homologous X
chromosome with only a single X chromosome present. Her condition is
called:
A) Down syndrome.
B) Cri du chat syndrome.
C) Turner syndrome.
D) Edward syndrome
ANSWER: c
A child is diagnosed with cystic fibrosis. History reveals that the child's
parents are first cousins. Cystic fibrosis was most likely the result of:
A) X inactivation.
B) genomic imprinting.
C) consanguinity.
, 4|Page
D) obligate carriers.
ANSWER: c
Joey, age 9, is admitted to a pediatric unit with Duchenne muscular
dystrophy. He inherited this condition through a:
A) sex-linked dominant trait.
B) sex-influenced trait.
C) sex-limited trait.
D) sex-linked recessive trait.
ANSWER: d
A 50-year-old male was recently diagnosed with Huntington disease.
Transmission of this disease is associated with:
A) penetrance.
B) recurrence risk.
C) expressivity.
D) delayed age of onset.
ANSWER: d
People who have neurofibromatosis will show varying degrees of the disease;
this is because of the genetic principle of:
A) penetrance.
B) expressivity.
C) dominance.
