Cell Biology and Genetics

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Questions and Answers

What is the result of non-disjunction during meiosis?

  • Separation of homologous chromosomes
  • Nondisjunction of sister chromatids
  • Gametes with an abnormal number of chromosomes (correct)
  • Increased telomere length

What is the function of telomeres in stem cells?

  • To promote DNA replication
  • To protect the chromosome from deterioration (correct)
  • To facilitate mitosis
  • To increase gene expression

What is the purpose of homologous chromosomes?

  • To facilitate crossing over during meiosis (correct)
  • To increase genetic variation
  • To ensure genetic continuity
  • To regulate gene expression

How do stem cells contribute to sex determination?

<p>They do not contribute to sex determination (B)</p> Signup and view all the answers

What is the significance of diploma pens and plaid in relation to meiosis and stem cells?

<p>They are not relevant to meiosis and stem cells (D)</p> Signup and view all the answers

During which stage of meiosis do homologous chromosomes separate and move to opposite poles of the cell?

<p>Anaphase I (B)</p> Signup and view all the answers

What is the term for the error that occurs when a pair of chromosomes fails to separate during meiosis?

<p>Non-disjunction (C)</p> Signup and view all the answers

Which of the following is an example of a syndrome caused by a non-disjunction error during meiosis?

<p>Trisomy 21 (D)</p> Signup and view all the answers

What is the primary function of telomeres in stem cells?

<p>To protect the ends of chromosomes from degradation (C)</p> Signup and view all the answers

What is the term for the process by which stem cells differentiate into specialized cells?

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

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