The worksheet asks you to match the images (A-J) with the corresponding phases of meiosis and identify what is happening in each phase. Below is the solution with explanations for each phase:
Meiosis Phases and Matching
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1. Diploid Cell
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Image: A
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Explanation: This image shows a diploid cell with chromosomes that have not yet replicated. The cell is in its resting state before meiosis begins.
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2. Prophase I
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Image: G
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Explanation: Prophase I is characterized by the formation of tetrads (homologous chromosomes pairing up). The image shows homologous chromosomes paired together, forming chiasmata where crossing-over can occur.
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3. Metaphase I
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Image: D
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Explanation: In metaphase I, homologous chromosomes align at the metaphase plate (equatorial plane). The spindle fibers attach to the kinetochores of the chromosomes, preparing for their separation.
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4. Anaphase I
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Image: E
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Explanation: During anaphase I, homologous chromosomes are separated and pulled to opposite poles of the cell. Sister chromatids remain attached at this stage.
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5. Telophase I
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Image: C
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Explanation: Telophase I follows anaphase I, where the separated homologous chromosomes reach opposite poles of the cell. The nuclear envelope may begin to reform, and cytokinesis may occur, resulting in two haploid daughter cells.
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6. Prophase II
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Image: H
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Explanation: Prophase II occurs in the daughter cells produced from meiosis I. Chromosomes condense again, and the spindle apparatus forms to prepare for the separation of sister chromatids.
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7. Metaphase II
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Image: B
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Explanation: In metaphase II, the chromosomes align at the metaphase plate in the center of the cell. Spindle fibers attach to the kinetochores of the sister chromatids, preparing for their separation.
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8. Anaphase II
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Image: I
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Explanation: During anaphase II, sister chromatids are separated and pulled to opposite poles of the cell. This is similar to anaphase in mitosis but occurs in haploid cells.
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9. Telophase II
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Image: J
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Explanation: Telophase II follows anaphase II, where the separated sister chromatids reach opposite poles of the cell. The nuclear envelope reforms, and cytokinesis occurs, resulting in four haploid daughter cells.
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10. Gamete
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Image: F
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Explanation: The final result of meiosis is the production of gametes (sperm or egg cells). Image F shows a single haploid cell, which is a gamete.
Final Matchings
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Diploid Cell: A
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Prophase I: G
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Metaphase I: D
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Anaphase I: E
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Telophase I: C
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Prophase II: H
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Metaphase II: B
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Anaphase II: I
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Telophase II: J
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Gamete: F
Summary
Each phase of meiosis involves specific changes in chromosome behavior and cellular structure. By carefully observing the images and understanding the key features of each phase, you can correctly match them as shown above. Meiosis ultimately results in the production of four genetically diverse haploid cells (gametes).
Parent Tip: Review the logic above to help your child master the concept of meiosis phases worksheet.
