Teratology Lecture 3: Structural Chromosomal Aberrations

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Questions and Answers

What is the primary difference between allelic variations and structural chromosomal aberrations?

  • Allelic variations affect only one gene, while structural chromosomal aberrations affect multiple genes. (correct)
  • Allelic variations result in birth defects, while structural chromosomal aberrations do not.
  • Structural chromosomal aberrations are more common than allelic variations.
  • Structural chromosomal aberrations are caused by mutations in particular genes, while allelic variations are not.

What is the term used to describe changes in the physical structure of chromosomes?

  • Chromosomal mutations (correct)
  • Structural gene alterations
  • Allelic rearrangements
  • Genetic variations

What is a potential consequence of structural chromosomal aberrations?

  • Reduced risk of birth defects
  • Increased height
  • Improved cognitive function
  • Increased risk for infertility (correct)

What is the term used to describe small changes in a specific gene?

<p>Allelic variations (C)</p> Signup and view all the answers

What is the scope of genes affected by structural chromosomal aberrations?

<p>More than one gene (B)</p> Signup and view all the answers

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