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Pathophysiology Exam 1 CORRECT QUESTIONS & ANSWERS
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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. ...

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  • August 1, 2024
  • 41
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • pathophysiology
  • pathophysiology exam 1 correct questions answers
  • an ordered photographic display of a set of chromo
  • an error in which homologous chromosomes fail to s

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  • Pathophysiology

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Pathophysiology Exam 1 CORRECT QUESTIONS
& ANSWERSPathophysiology Exam 1 CORRECT QUESTIONS
& ANSWERS Pathophysiology Exam 1
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.
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.
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.
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.
D) recessiveness. - ANSWER b
Cystic fibrosis is caused by an _____ gene.
A) X-linked dominant
B) X-linked recessive
C) autosomal dominant
D) autosomal recessive - ANSWER d
To express a polygenic trait:
A) genes must interact with the environment.

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