3.3.2 Meiosis

• During metaphase I, paired chromosomes align along the metaphase plate
• Meiosis is essential for growth and repair.

  False
• Order the stages of meiosis II:

  1️⃣ Prophase II

  2️⃣ Metaphase II

  3️⃣ Anaphase II

  4️⃣ Telophase II
• What is the mechanism of crossing over in meiosis I?

  Breaks and rejoins DNA strands
• Meiosis produces daughter cells with high genetic diversity.
• During meiosis I, homologous chromosomes pair up and exchange genetic material via crossing over
• What is the term for the pairing of homologous chromosomes in meiosis I?

  Synapsis
• Crossing over occurs during prophase I.
• In metaphase I, homologous pairs align along the metaphase plate.
• Arrange the stages of meiosis I in the correct order.

  1️⃣ Prophase I

  2️⃣ Metaphase I

  3️⃣ Anaphase I

  4️⃣ Telophase I
• How many haploid daughter cells are produced at the end of meiosis I?

  Two
• In anaphase II, sister chromatids separate and move to opposite poles.
• How many haploid daughter cells are formed at the end of meiosis II?

  Four
• Match the stage of meiosis with its key feature.

  Prophase I ↔️ Crossing over occurs

  Metaphase I ↔️ Homologous pairs align

  Anaphase I ↔️ Homologous pairs separate

  Telophase I ↔️ Chromosomes arrive at poles
• In anaphase I, homologous pairs move to opposite poles.
• Arrange the stages of meiosis II in the correct order.

  1️⃣ Prophase II

  2️⃣ Metaphase II

  3️⃣ Anaphase II

  4️⃣ Telophase II
• What is meiosis and its purpose?

  Cell division for sexual reproduction
• During prophase I, homologous chromosomes exchange genetic material via crossing over
• Order the stages of meiosis I:

  1️⃣ Prophase I

  2️⃣ Metaphase I

  3️⃣ Anaphase I

  4️⃣ Telophase I
• Four diploid daughter cells are formed at the end of meiosis II.

  False
• What contributes to genetic diversity in meiosis?

  Crossing over and independent assortment
• Why is chromosome pairing in meiosis I important?

  Ensures crossing over
• Homologous chromosomes align side by side, forming a tetrad.
• Crossing over enhances genetic variation by creating new allele combinations.
• What is the primary purpose of mitosis?

  Growth and repair
• In mitosis, the chromosome number remains diploid.
• Meiosis involves two divisions to produce four haploid cells.
• What happens to the chromosome number during meiosis?

  Reduced to haploid
• Independent assortment during meiosis creates unique gene combinations.
• Fertilization combines the genetic material from two haploid gametes to restore the diploid chromosome number.
• Match the stage of meiosis with its key event.

  Meiosis I ↔️ Crossing over and synapsis

  Meiosis II ↔️ Sister chromatids separate
• How many daughter cells are produced in meiosis compared to mitosis?

  Four haploid cells
• Meiosis is essential for sexual reproduction.
• What is the term for the pairing of homologous chromosomes in meiosis I?

  Synapsis
• In anaphase II, sister chromatids separate and move to opposite poles.
• Match the feature with the correct stage of meiosis.

  Homologous chromosomes separate ↔️ Meiosis I

  Sister chromatids separate ↔️ Meiosis II
• Stages of Meiosis I

  1️⃣ Prophase I

  2️⃣ Metaphase I

  3️⃣ Anaphase I

  4️⃣ Telophase I
• Stages of Meiosis II

  1️⃣ Prophase II

  2️⃣ Metaphase II

  3️⃣ Anaphase II

  4️⃣ Telophase II
• Four haploid daughter cells are formed in Meiosis II.
• Match the feature with the correct stage of meiosis:

  Homologous chromosomes separate ↔️ Meiosis I

  Sister chromatids separate ↔️ Meiosis II