Cell Division Recap

Downloadable with answers.

  1. Name the five main stages of mitosis in order.
  2. List three functions of mitosis.
  3. At which stage of mitosis do chromosomes first become visible with the light microscope?
  4. At which mitotic stages are the nuclear membrane entirely absent?
  5. At which mitotic stage does the parent cell 'split' into two daughter cells?
  6. What term describes this 'splitting'?
  7. Name the organelles needed for cell division in animals, but absent in plants.
  8. During mitosis, by which stage is the fully organised spindle present?
  9. What are the two parallel 'arms' of a single chromosome called?
  10. Name the structure that links them.
  11. When does the nucleolus reappear?
  12. When are bivalents formed?
  13. What are bivalents?
  14. Name the process bivalents are formed by.
  15. What is a key difference in genetic terms between mitotic prophase and meiotic prophase I?
  16. What are two key differences between mitotic metaphase and meiotic metaphase I?
  17. Why is a second round of division (Meiosis II) necessary?
  18. Which type of division produces haploid cells?
  19. What in genetic terms are the different outcomes of mitosis and meiosis in animals?
  20. Compile a table as follows, showing the key events in both types of cell division and email it to me. (Or check your textbook!)
 

Interphase

Prophase

Metaphase

Anaphase

Telophase

Mitosis

          

Meiosis I

          

Meiosis II

          

 

 

Answers

  1. Interphase;prophase;metaphase;anaphase;telophase (IPMAT)
  2. Growth/vegetative or sexual reproduction/repair
  3. Prophase
  4. Metaphase and Anaphase - keyword is 'entirely'-remember the membrane is present for at least part of the other stages.
  5. Telophase
  6. Cytokinesis
  7. Centrioles
  8. Metaphase (though it is forming during the later parts of prophase!)
  9. Chromatids
  10. Centromere
  11. Telophase
  12. Meiotic prophase I
  13. They are formed by the pairing of homologous chromosomes.
  14. Synapsis
  15. Crossing over occurs during meiotic prophase I but not mitotic prophase
  16. Random assortment of homologous chromosomes during meiotic metaphase I; during mitosis chromosomes line up singly along equator,attached by centromere
  17. Because crossing over has created chromosomes with 'odd' genetically dissimilar chromatids. Only a mitotic division will separate these.
  18. Meiosis
  19. Mitosis produces two genetically identical diploid(in animals)daughter cells while meiosis results in four genetically different haploid daughter cells.
  20. Email me or check your textbook!

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