19. Label the following as either a description of an event in meiosis.mitosis, or in both meiosis and mitosis. Use the following key: me=meiosis mi=mitosis bt=both 1 chromosomes condense during the division 2. crossing-over occurs during the division 3. cytokinesis and de condensation occur at the end of the process 4. daughter cells are the same as parent cells 5. DNA must replicate before the process begins 6. end-products are not capable of further division by themselves 7. found only in 2n eukaryotic cells 8 granddaughter cells are formed as the end products become 9 has a long prophase 10. has two stages of division 11. homologous chromosomes align independently on the equatorial plate 12. interphase only occurs before the division 13. nuclear envelopes disintegrate in preparation for cellular division 14. occurs only in reproductive organs 15 spindle fibres are produced to guide division of genetic material 16. tetrads are formed 17. interphase occurs in the middle of the process 18. telophase is the final process

Question

19. Label the following as either a description of an event in meiosis.mitosis, or in both meiosis and mitosis. Use the following key: me=meiosis mi=mitosis bt=both 1 chromosomes condense during the division 2. crossing-over occurs during the division 3. cytokinesis and de condensation occur at the end of the process 4. daughter cells are the same as parent cells 5. DNA must replicate before the process begins 6. end-products are not capable of further division by themselves 7. found only in 2n eukaryotic cells 8 granddaughter cells are formed as the end products become 9 has a long prophase 10. has two stages of division 11. homologous chromosomes align independently on the equatorial plate 12. interphase only occurs before the division 13. nuclear envelopes disintegrate in preparation for cellular division 14. occurs only in reproductive organs 15 spindle fibres are produced to guide division of genetic material 16. tetrads are formed 17. interphase occurs in the middle of the process 18. telophase is the final process

Answer 1

1. **bt** - Chromosome condensation occurs in both meiosis and mitosis to facilitate chromosome movement and segregation.2. **me** - Crossing over, the exchange of genetic material between homologous chromosomes, is unique to meiosis and contributes to genetic diversity.3. **bt** - Cytokinesis, the division of the cytoplasm, and chromosome decondensation occur at the end of both meiosis and mitosis, restoring the interphase state.4. **mi** - Daughter cells are genetically identical to parent cells in mitosis, ensuring tissue growth and repair. Meiosis produces genetically different daughter cells.5. **bt** - DNA replication during interphase is essential for both meiosis and mitosis to provide each daughter cell with a complete set of chromosomes.6. **me** - The end products of meiosis (gametes) are not capable of further division. Mitosis produces cells that can continue to divide.7. **me** - Meiosis occurs only in cells that are diploid (2n) or have homologous chromosome pairs. Mitosis can occur in both haploid and diploid cells.8. **me** - "Granddaughter cells" are a result of the two divisions in meiosis. Mitosis has only one division.9. **me** - Meiosis I, specifically Prophase I, is significantly longer than prophase in mitosis due to events like crossing over.10. **me** - Meiosis involves two rounds of division (Meiosis I and Meiosis II), while mitosis has only one.11. **me** - Independent assortment of homologous chromosomes occurs during Metaphase I of meiosis, contributing to genetic variation.12. **mi** - In mitosis, interphase occurs only before the division. Meiosis has an interkinesis between Meiosis I and Meiosis II, but it is not a full interphase with DNA replication.13. **bt** - Nuclear envelope disintegration is necessary in both meiosis and mitosis to allow spindle fibers to access the chromosomes.14. **me** - Meiosis occurs exclusively in reproductive organs to produce gametes (sperm and eggs).15. **bt** - Spindle fibers are crucial for chromosome segregation in both meiosis and mitosis.16. **me** - Tetrads, formed by the pairing of homologous chromosomes, are unique to meiosis.17. **me** - There is a brief interphase-like stage called interkinesis between meiosis I and meiosis II, but no DNA replication occurs.18. **bt** - Telophase is the final stage of both mitosis and meiosis (Telophase I and Telophase II), where nuclear envelopes reform and chromosomes decondense.

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