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

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