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Genetics and Chromosomal Abnormalities Quiz
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Genetics and Chromosomal Abnormalities Quiz

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Questions and Answers

What is the most likely cause of abnormal sex chromosomes like X (only have one X chromosome) or XXY (extra X chromosome)?

  • A normal egg was fertilized by a haploid sperm
  • Nondisjunction occurred during meiosis (correct)
  • An error occurred in mitosis of the fertilized egg
  • Sex chromosomes in gametes are lost during fertilization

    • What is the most common chromosomal pattern in Klinefelter syndrome?

  • 47, XXY (correct)
  • 48, XXYY
  • 45, X
  • 46, XY

    • Nondisjunction is a genetic phenomenon that primarily occurs during which process?

  • Protein synthesis
  • DNA replication
  • Cell division (correct)
  • Transcription

    • In chickens, which allele for feather color is dominant?

    <p>AA - genotype; red feathers – phenotype</p> Signup and view all the answers

    In humans, what is the chromosomal pattern in Turner syndrome?

    <p>45, X</p> Signup and view all the answers

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