20.02.2024 - Understanding Meiosis Cell Division

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Questions and Answers

During which stage do sister chromatids begin to condense in prophase II?

  • Telophase II
  • Anaphase II
  • Metaphase II
  • Prophase II (correct)

At which stage do sister chromatids align at the metaphase plate?

  • Telophase II
  • Prophase II
  • Metaphase II (correct)
  • Anaphase II

What is the final event in anaphase II?

  • Sister chromatids separate and move to opposite poles (correct)
  • Chromosomes align at the metaphase plate
  • Sister chromatids condense
  • Nuclear envelopes reform

Which stage marks the de-condensation of chromosomes and cytokinesis?

<p>Telophase II (B)</p> Signup and view all the answers

What is the purpose of these stages in meiosis?

<p>To ensure the accurate distribution of genetic material (C)</p> Signup and view all the answers

During which phase of Meiosis I do homologous chromosomes exchange genetic material?

<p>Prophase I (D)</p> Signup and view all the answers

What is the main difference between cytokinesis in Meiosis I and cytokinesis in Meiosis II?

<p>In Meiosis I, the cell divides into two cells, while in Meiosis II, the cell divides into four cells. (C)</p> Signup and view all the answers

What happens during Anaphase I of Meiosis?

<p>Homologous chromosomes are pulled apart and move to opposite poles. (D)</p> Signup and view all the answers

Which stage of Meiosis I is characterized by the pairing of homologous chromosomes and crossing over?

<p>Prophase I (D)</p> Signup and view all the answers

What is one main similarity between Meiosis II and mitosis?

<p>Both separate sister chromatids into different cells. (B)</p> Signup and view all the answers

Which phase of Meiosis II separates sister chromatids into two different cells?

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

During which stage of Meiosis II are sister chromatids separated and pulled to opposite poles?

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

What is the significance of the nuclear envelope breaking down again in Prophase II of Meiosis?

<p>To enable the condensation of chromosomes (C)</p> Signup and view all the answers

Which event occurs during Telophase II and Cytokinesis in Meiosis?

<p>Chromosome de-condensation (D)</p> Signup and view all the answers

What differentiates the alignment of chromosomes in Metaphase II from Metaphase I in Meiosis?

<p>Orientation of sister chromatids in Metaphase II (D)</p> Signup and view all the answers

What ensures that genetic material is accurately distributed in Meiosis?

<p>Separation of sister chromatids in Anaphase II (D)</p> Signup and view all the answers

What is the main purpose of meiosis in terms of chromosome number?

<p>To reduce the chromosome number by half (B)</p> Signup and view all the answers

Which phase in Meiosis I involves the alignment of homologous chromosomes at the metaphase plate?

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

What is a key event that occurs during Prophase I of Meiosis?

<p>Crossing over of genetic material (C)</p> Signup and view all the answers

How does Anaphase I in Meiosis differ from Anaphase in mitosis?

<p>Homologous chromosomes are pulled apart in Anaphase I and sister chromatids in mitosis (D)</p> Signup and view all the answers

Which term describes the division that separates sister chromatids into two different cells in Meiosis II?

<p>Equational division (D)</p> Signup and view all the answers

What happens during Telophase I of Meiosis?

<p>Chromosomes de-condense, and the nuclear envelope reforms (B)</p> Signup and view all the answers

What is the significance of the sister chromatids facing opposite poles during Metaphase II of Meiosis?

<p>It promotes genetic diversity by ensuring each daughter cell receives a mix of genetic material. (B)</p> Signup and view all the answers

What is the main role of cytokinesis in Telophase II of Meiosis?

<p>To divide the cytoplasm and create four haploid daughter cells. (D)</p> Signup and view all the answers

What ensures accurate distribution of genetic material during Anaphase II of Meiosis?

<p>The separation of sister chromatids to opposite poles. (A)</p> Signup and view all the answers

How does Prophase II differ from Prophase I in Meiosis?

<p>Prophase II includes the condensation of chromosomes consisting of sister chromatids. (D)</p> Signup and view all the answers

Why is it crucial that the chromosomes align at the metaphase plate in both Metaphase I and Metaphase II of Meiosis?

<p>To ensure proper distribution of genetic material to daughter cells. (A)</p> Signup and view all the answers

What is the main difference between cytokinesis in Meiosis I and cytokinesis in Meiosis II?

<p>Cytokinesis in Meiosis I results in two cells with the same number of chromosomes as the original cell, while cytokinesis in Meiosis II results in two cells with half the number of chromosomes. (B)</p> Signup and view all the answers

Which stage of Meiosis II is analogous to Metaphase I in Meiosis?

<p>Metaphase II (D)</p> Signup and view all the answers

During which sub-stage of Prophase I do homologous chromosomes begin to pair?

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

What key process occurs during Anaphase I of Meiosis that distinguishes it from Anaphase II?

<p>Separation of homologous chromosomes (C)</p> Signup and view all the answers

Which event characterizes Telophase I of Meiosis?

<p>Formation of a new nuclear envelope around each set of chromosomes (C)</p> Signup and view all the answers

What is a distinguishing feature of Cytokinesis in Meiosis II compared to Cytokinesis in Meiosis I?

<p>Cytokinesis in Meiosis II results in four genetically distinct daughter cells, while cytokinesis in Meiosis I results in two daughter cells. (A)</p> Signup and view all the answers

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