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“Mitosis and Meiosis Practice Quiz” Mitosis and Meiosis 1. Diagram and label the phases of mitosis. 2. Compare and contrast the following characteristics of mitosis and meiosis: a. The type of cells that each process produces (somatic or sex cells), and the number of chromosomes that can be found in each cell (assuming human cells which have 23 pairs) b. The proportion or fraction of the original number of chromosomes c. When each of the processes occurs—for humans 3. Illustrate the process of crossing over. Explain how crossing over impacts the genes in the sex cells (gametes). 4. If a human somatic (body) cell contains 23 pairs of chromosomes, how many chromosomes will the cell contain after mitosis and meiosis? 5. Explain the cause of Down Syndrome by a nondisjunction in meiosis. 6. Compare and contrast haploid and diploid cells. 7. Predict the outcome of mitosis and meiosis if the chromosomes did not replicate beforehand. 8. Sketch a homologous pair of chromosomes and include the alleles for three different genes. 9. Compare and contrast organisms resulting from asexual reproduction by mitosis and sexual reproduction by the union of gametes. 10. Explain the relationship between crossing over or linkage and the distance between genes on a chromosome. Cell Cycle 1. Illustrate the cell cycle. Include the G0, G1, G2, and S phases. 2. Compare and contrast mitosis (M-phase) and interphase. 3. Compare and contrast a cell that is cancerous and dividing normally by mitosis. 4. Construct a graph that shows how the amount of DNA changes throughout the cell cycle. 5. Give an example or scenario of how a cell becomes cancerous. “Mitosis and Meiosis Review” Part A Directions: Match the correct vocabulary word to the definitions below. Anaphase Prophase Cytokinesis haploid diploid fertilization Cell Cycle Mutation interphase centromere Telophase Metaphase chromosome Zygote Mitosis Somatic Cell 1.) A fertilized egg cell (a united egg and sperm) 2.) Any change to an organism's DNA 3.) Coiled DNA/appears as X’s under a microscope 4.) Refers to any body cell 5.) Name for the life cycle of a cell 6.) Any cell with only one set of chromosomes. 7.) Phase of the cell cycle where a cell creates proteins, performs cellular respiration, and grows in size 8.) Portion of the cell cycle where chromosomes are lined up in the middle of the cell 9.) Portion of the cell cycle where chromosomes are split and head to opposite poles 10.) Portion of the cell cycle where chromosomes first appear 11.) Portion of the cell cycle where the nucleus divides to create two genetically identical cells 12.) Portion of the cell cycle where the nucleus reforms and chromosomes begin to unwind 13.) Union of egg and sperm cell 14.) Any cell with two sets of chromosomes 15.) Specific portion of the cell cycle where the cytoplasm is divided Mitosis, Meiosis, or Both? Part B Directions: For each of the following statements, write “T” if it refers to mitosis. Write “O” if it refers to meiosis. Write “B” if it refers to both processes. 1) Creates genetically identical cells. 2) Creates genetically different cells. 3.) Involves one set of divisions. 4.) Involves two sets of divisions. 5.) Creates somatic cells. 6.) Creates gametes. 7.) Creates cells in animals. 8.) Creates cells in bacteria. 9.) Sperm creation. 10.) Moves chromosomes. 11.) Crossing-over occurs. 12.) Clones created. 13.) One diploid cell becomes four haploid cells. 14.) One diploid cell becomes two diploid cells. 15.) Used for growth, repair, and healing. 16.) Occurs in prokaryotes. 17.) Occurs in eukaryotes. Part C Open Response 1. Describe how meiosis and sexual reproduction create genetic diversity. 2. Sketch a homologous pair of chromosomes and include the alleles for three different genes. 3. Compare and contrast haploids diploids and zygotes. 4. Explain the impact of crossing over on the inheritance of alleles. 5. Illustrate the process of crossing over with two homologous chromosomes. 6. Predict the outcome of mitosis and meiosis if the chromosomes did not replicate beforehand. 7. Explain the occurrence in meiosis that ensures one gene copy from every trait is inherited from each parent.