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Quiz on Cytogenetics, created by rachelbird10 on 21/10/2015.

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Cytogenetics

Question 1 of 15

1

A structural chromosomal abnormality is described by which of the following?

Select one of the following:

  • Chromosome breakage with improper repair

  • Nondisjunction of chromosomes during Meiosis I

  • Nondisjunction of chromosomes during Meiosis II

  • Extra chromosomes created and added to genome

Explanation

Question 2 of 15

1

How many chromosomes could someone with polypoidy have?

Select one of the following:

  • 69 chromosomes

  • 47 chromosomes

  • 45 chromosomes

Explanation

Question 3 of 15

1

You can survive with only one X chromosome.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 15

1

Dispermy results in?

Select one of the following:

  • Triploidy

  • Tetraploidy

  • Polyploidy

Explanation

Question 5 of 15

1

Fill the blank space to complete the text.

The most common pregnancy complication is .

Explanation

Question 6 of 15

1

A baby is born with feet shaped like rockers and clenched hands. The baby had poor prenatal growth. Which of the following describe the condition of the baby?

Select one of the following:

  • Edwards Syndrome, Nondisjunction

  • Edwards Syndrome, Robertsonian Translocation

  • Patau Syndrome, Nondisjuction

  • Patau Syndrome, Robertsonian Translocation

Explanation

Question 7 of 15

1

All of the following include trisomy. Down Syndrome is a defect in chromosome . Edwards Syndrome is a defect in chromosome . Patau is a defect in chromosome .

Drag and drop to complete the text.

    13
    21
    18
    22
    19
    17
    15
    25

Explanation

Question 8 of 15

1

Turner Syndrome is a result of nondisjunction of maternal chromosomes.

Select one of the following:

  • True
  • False

Explanation

Question 9 of 15

1

Fill the blank spaces to complete the text.

The Turner Syndrome genotype is . The Klinefelter genotype is . The Tripe X Syndrome genotype is . The last sex chromosome disorder involves paternal meiosis II nondisjunction and is called

Explanation

Question 10 of 15

1

Which of the following (more than one?) could be caused by maternal nondisjuction?

Select one or more of the following:

  • Turner Syndrome

  • Triple X Syndrome

  • Klinefelter Syndrome

  • Edwards Syndrome

Explanation

Question 11 of 15

1

Which of the following would result in a phenotypically normal individual?

Select one of the following:

  • Robertsonian translocation

  • Deletion

  • Duplication

  • Isochromosome

Explanation

Question 12 of 15

1

Which of the following would describe a male with a balanced reciprocal translocation involving 3q and 17p?

Select one of the following:

  • 44 Structurally normal chromosomes

  • An abnormal phenotype

  • No increased risk of miscarriage

  • 1 structurally abnormal chromosome

Explanation

Question 13 of 15

1

A 4 month old female infant is not obtaining normal developmental milestones and has failure to thrive. Chromosome analysis reveals an abnormality; one copy of chromosome 21 has extra genetic material attached to the long arm. The origin of the extra material is not obvious. All other chromosomes appear normal. How would you interpret this finding?

Select one of the following:

  • She has down syndrome

  • She has a partial trisomy 21

  • This was inherited from one of her parents who has a balanced abnormal segregation.

  • The abnormality could be phenotypically mild.

Explanation

Question 14 of 15

1

A monosomy is worse than a trisomy.

Select one of the following:

  • True
  • False

Explanation

Question 15 of 15

1

A baby is born with only one chromosome 15 with the two q arms attached at one centromere. Which of the following most correctly describes the baby's condition.

Select one of the following:

  • Robertsonian translocation

  • An unbalanced structural mutation

  • Mosaicism for chromosome 15

  • Monosomy for chromosome 15

Explanation

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