Genetic and Chromosomal Abnormalities Quiz
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Questions and Answers

What is the most common genetic abnormality during prenatal development?

  • Cystic Fibrosis
  • Trisomy 21 (Down Syndrome) (correct)
  • Sickle Cell Anemia
  • Huntington's Disease

    • What is the cause of Down Syndrome?

  • An extra chromosome on the 21st pair (correct)
  • A deficiency in the 21st chromosome
  • A mutation in the 21st chromosome
  • Missing a chromosome on the 21st pair

    • Which of the following is an example of an inherited disease?

  • Down Syndrome
  • Klinefelter's Syndrome
  • Turner Syndrome
  • Huntington's Disease (correct)

    • What is the cause of Klinefelter's Syndrome?

    <p>An extra X chromosome</p> Signup and view all the answers

    What determines the sex of a human being?

    <p>The 23rd chromosome pair</p> Signup and view all the answers

    What is the difference between identical and fraternal twins?

    <p>Both a and c</p> Signup and view all the answers

    What is the primary genetic cause of Down syndrome?

    <p>An extra copy of chromosome 21</p> Signup and view all the answers

    Which of the following is an example of an inherited disease?

    <p>Cystic fibrosis</p> Signup and view all the answers

    What is the primary cause of sex determination in human beings?

    <p>The presence of the SRY gene on the Y chromosome</p> Signup and view all the answers

    Which of the following is an example of a sex chromosomal abnormality?

    <p>Turner syndrome</p> Signup and view all the answers

    What is the term used to describe the birth of more than one offspring from a single pregnancy?

    <p>Multiple births</p> Signup and view all the answers

    Which chromosomal abnormality is associated with an increased risk of developing certain types of cancer?

    <p>Klinefelter syndrome</p> Signup and view all the answers

    What is the basic unit of heredity that carries genetic information?

    <p>Genes</p> Signup and view all the answers

    What is the condition caused by an extra copy of chromosome 21?

    <p>Down syndrome</p> Signup and view all the answers

    Which of the following is an example of a sex chromosomal abnormality?

    <p>Klinefelter syndrome</p> Signup and view all the answers

    Which of the following determines the sex of a human being?

    <p>Sex chromosomes</p> Signup and view all the answers

    What is the term used to describe the birth of more than one offspring at the same time?

    <p>Multiple births</p> Signup and view all the answers

    Which of the following is an inherited disease caused by a recessive gene?

    <p>Cystic fibrosis</p> Signup and view all the answers

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