Chromosomal Abnormalities Quiz
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Questions and Answers

Which of the following is true about chromosomal abnormalities in newborns?

  • They are generally fatal
  • The most common are (45,X), trisomy 16, 21, and 22
  • The most common are trisomies of chromosome 21, 18, 13, or either of the sex chromosomes (correct)
  • They are different from those found in spontaneously aborted fetuses

What is the field of study that focuses on chromosomes and their abnormalities called?

  • Embryology
  • Genetics
  • Molecular Biology
  • Cytogenetics (correct)

What is the normal set of human chromosomes?

  • 45 autosomal chromosomes + 1 sex chromosome
  • 46 autosomal chromosomes + 1 sex chromosome
  • 44 autosomal chromosomes + 2 sex chromosomes (correct)
  • 46 autosomal chromosomes + 2 sex chromosomes

What is monosomy?

<p>Having only one of a particular type of chromosome (D)</p> Signup and view all the answers

What is polyploidy?

<p>Having more than two sets of chromosomes (A)</p> Signup and view all the answers

Flashcards

Chromosomal abnormalities in newborns

Common newborn abnormalities include extra copies of chromosomes 21, 18, 13, or sex chromosomes.

Cytogenetics

The study of chromosomes and their abnormalities.

Normal human chromosomes

44 autosomal chromosomes plus 2 sex chromosomes.

Monosomy

Having only one chromosome of a specific type.

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Polyploidy

Having more than two sets of chromosomes.

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