Genetics and Chromosomal Abnormalities Quiz
15 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the result of nondisjunction during meiosis?

  • Mitosis
  • Chromosomal abnormalities (correct)
  • Increased fertility
  • Genetic variation

    • In species where males are the heterogametic sex, what type of gametes do they produce?

  • Unlike gametes (correct)
  • Only Y chromosomes
  • Only X chromosomes
  • Identical gametes

    • What is the characteristic karyotype of Klinefelter syndrome?

  • 45,X
  • 46,XY
  • 46,XX
  • 47,XXY (correct)

    • Which of the following is a characteristic of Turner syndrome?

    <p>Short stature</p> Signup and view all the answers

    What is the notation used when female is the heterogametic sex?

    <p>ZZ/ZW</p> Signup and view all the answers

    In a person with Turner syndrome who has a 45,X karyotype, in which parent did the nondisjunction occur?

    <p>Father during meiosis I</p> Signup and view all the answers

    What is the purpose of X-inactivation in females?

    <p>To ensure equal gene expression between males and females</p> Signup and view all the answers

    Which of the following is NOT a determinant of sex in Drosophila and C. elegans?

    <p>Y chromosome</p> Signup and view all the answers

    What is the term for the inactivated X chromosome in the nucleus of a female cell?

    <p>Barr body</p> Signup and view all the answers

    What is the role of the X-inactivation center (Xic) in females?

    <p>It controls the inactivation of one X chromosome</p> Signup and view all the answers

    What is the result of nondisjunction of sex chromosomes in a female?

    <p>A female with 47,XXX karyotype</p> Signup and view all the answers

    What is the main function of the SRY gene in sex determination?

    <p>To trigger the development of male characteristics</p> Signup and view all the answers

    What is the characteristic of the MSY region of the Y chromosome?

    <p>It makes up 5% of the Y chromosome</p> Signup and view all the answers

    What would be the phenotypic sex of an individual with XXY karyotype and a nonsense mutation in the SRY gene?

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

    What is the characteristic of a female with Turner syndrome?

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

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser