5.2 Meiosis and Genetic Diversity

• What is meiosis defined as?

  Specialized cell division
• In meiosis I, the parent cell divides into two daughter cells, each with the same number but different combinations of chromosomes
• Order the processes that contribute to genetic diversity in meiosis

  1️⃣ Independent assortment

  2️⃣ Crossing over
• Meiosis results in haploid cells, while mitosis produces diploid cells
• Meiosis produces cells with half the normal number of chromosomes.


  True
• What type of cells are produced in meiosis II?

  Haploid cells
• Match the characteristics of meiosis and mitosis

  Meiosis ↔️ Two cell divisions

  Mitosis ↔️ One cell division
• What is the purpose of meiosis in organisms?

  Sexual reproduction
• Order the phases of meiosis I

  1️⃣ Prophase I

  2️⃣ Metaphase I

  3️⃣ Anaphase I

  4️⃣ Telophase I
• What happens during metaphase I of meiosis I?

  Homologous chromosomes align
• Meiosis results in genetic diversity through crossing over and independent assortment
• Match the phases of meiosis I with their key events

  Prophase I ↔️ Crossing over occurs

  Metaphase I ↔️ Homologous chromosomes align

  Anaphase I ↔️ Homologous chromosomes separate

  Telophase I ↔️ Nuclear envelopes reform
• In anaphase I, the reduction in chromosome number results in daughter cells with half the normal number of chromosomes
• During Anaphase I, the chromosome number is reduced from diploid to haploid
• What are the two processes that contribute to genetic diversity in meiosis?

  Crossing over and independent assortment
• Mitosis produces two identical diploid cells


  True
• Order the phases of Meiosis I

  1️⃣ Prophase I

  2️⃣ Metaphase I

  3️⃣ Anaphase I

  4️⃣ Telophase I
• In Telophase II, cytokinesis results in four haploid cells
• In Metaphase II, sister chromatids align at the metaphase plate


  True
• During Anaphase II, sister chromatids separate and move to opposite poles
• In which phase of meiosis does independent assortment occur?

  Metaphase I
• Independent assortment ensures each gamete receives an identical combination of chromosomes

  False
• Meiosis involves two cell divisions: Meiosis I and Meiosis II
• Match the characteristic with the correct type of cell division:

  Number of Cell Divisions ↔️ Meiosis: Two, Mitosis: One

  Chromosome Number ↔️ Meiosis: Haploid, Mitosis: Diploid

  Purpose ↔️ Meiosis: Sexual Reproduction, Mitosis: Growth

  Genetic Variation ↔️ Meiosis: High, Mitosis: None
• During Prophase I, homologous chromosomes pair up in a process called synapsis
• Which phase of meiosis II involves the separation of sister chromatids?

  Anaphase II
• Order the stages of meiosis II:

  1️⃣ Prophase II

  2️⃣ Metaphase II

  3️⃣ Anaphase II

  4️⃣ Telophase II
• Anaphase I reduces the chromosome number from diploid to haploid
• During which phase of meiosis does crossing over occur?

  Prophase I
• Independent assortment occurs during Metaphase I of meiosis.

  True
• Mitosis is essential for the growth and repair of multicellular organisms.


  True
• During prophase I, homologous chromosomes pair up in a process called synapsis
• What reforms during telophase I of meiosis I?

  Nuclear envelopes
• Meiosis involves two successive cell divisions, while mitosis involves only one.

  True
• Order the phases of meiosis II

  1️⃣ Prophase II

  2️⃣ Metaphase II

  3️⃣ Anaphase II

  4️⃣ Telophase II
• Meiosis II results in four haploid cells with identical genetic information.

  False
• Order the key events in Anaphase I of meiosis

  1️⃣ Separation of homologous chromosomes

  2️⃣ Movement to opposite poles

  3️⃣ Reduction in chromosome number
• Meiosis results in four haploid gametes
• During Prophase I, crossing over occurs between non-sister chromatids
• In Metaphase I, homologous chromosome pairs align at the metaphase plate

  True