Meiosis I What happens here Interphase Prophase I

Meiosis I What happens here? ? Interphase Prophase I Metaphase I What type of cell am I? ? Anaphase I Telophase I Cytokinesis Images from: http: //www. phschool. com/science/biology_place/biocoach/meiosis/teloi. html

Meiosis II Coming from Meiosis I Prophase II Metaphase II Anaphase II Images from: http: //www. phschool. com/science/biology_place/biocoach/meiosis/teloi. html Telophase II Cytokinesis

v 1. What phase of MITOSIS is this? v 2. What are these known as?

v 3. Is this representing Meiosis I or Meiosis II? v 4. What phase of Meiosis II is this? v 5. What are these known as?

MITOSIS & CELL CYCLE: NAME THE EVENT v 6. The phase when the nuclear envelope reappears. v 7. The longest phase of the cell cycle.

MITOSIS & CELL CYCLE: NAME THE EVENT v 8. The phase of interphase where DNA is replicated. v 9. Another name for the “resting phase”

The Cell Cycle v 10. 3 reasons why our cells divide: v 11. What is the question asked at the end of the S phase? v 12. Cancer is a disease of the _____

v 13. What phase is represented here? v 14. What is being pulled apart? v 15. What are these known as?

v 16. How many cells are created at the end of meiosis II? v 17. @ the end of Meiosis I are the cells diploid or haploid?

v 18. What is occurring here? v 19. When does crossing over occur?

v 20. During Meiosis when are homologous pairs pulled apart? v 21. Describe 2 differences between the daughter cells of mitosis & meiosis.

v 22. Describe a similarity between the parent cell of mitosis & meiosis. v 23. Why MUST sex cells be haploid

v 24. What are 2 other names for Diploid cells? v 25. Name the 2 parts of the Somatic Cell Cycle:

v 26. When are sister chromatids separated during Meiosis? v 27. What event occurs during Metaphase I that does not occur during Metaphase II?

v 1. What phase of MITOSIS this? v. ANAPHASE R U O Y K C E H RS… C S ’ E T W E S L AN v 2. What are these known as? v. SPINDLES

v 3. Is this representing Meiosis I or Meiosis II? v. Meiosis II v 4. What phase of Meiosis II is this? v. Metaphase v 5. What are these known as? v. CENTRIOLES

MITOSIS & CELL CYCLE: NAME THE EVENT v 6. Nuclear envelope reappears. v. Telophase v 7. The longest phase of the cell cycle. v. Interphase v 8. The phase of interphase where DNA is replicated. v. S phase v 9. Another name for the “resting phase” v. G 0

REGULATORS v 10. 3 reasons why our cells divide: v. Injury, growth, replace damaged cells v 11. What is the question asked at the end of the S phase? v. Did the DNA replicate properly? v 12. Cancer is a disease of the _____ v. Cell Cycle

v 13. What phase is represented here? v. Anaphase I of Meiosis I v 14. What is being pulled apart? v. Homologous pairs v 15. What are these known as? v. Sister Chromatids

v 16. How many cells are created at the end of meiosis II? v 4 cells v 17. @ the end of Meiosis I are the cells diploid or haploid? v. Haploid v 18. What is occurring here? v. Crossing Over v 19. When does crossing over occur? v. Prophase I

v 20. During Meiosis when are homologous pairs pulled apart? v. Anaphase I v 21. Describe 2 differences between the daughter cells of mitosis & meiosis. v 1) Mi= 2 Me=4 2) Mi= diploid Me=haploid v 22. Describe a similarity between the parent cell of mitosis & meiosis. v. Diploid v 23. Why MUST sex cells be haploid v½ from Mommy and ½ from Daddy.

v 24. What are 2 other names for Diploid cells? v. Somatic and Body v 25. Name the 2 parts of the Somatic Cell Cycle v. Interphase and Mitosis v 26. When are sister chromatids separated during Meiosis? v. Anaphase II v 27. What event occurs during Metaphase I that does not occur during Metaphase II? v. Independent assortment.

1 The cell cycle consists of two major divisions: ___ 2 (splitting). (growth) and ___ 3 1) ___is the longest part of the cell cycle. This is when 4 broken down the cell grows and it’s DNA ___. It is 5 into three sub-divisions: ___ , when the cell grows, 6 the cell copies its DNA and___ , when 7 the ___, when cell grows some more. 2) Cell division is the next part of the cell cycle and has two major parts. The division of the nucleus is 8 while the division of the cytoplasm is called , ___ called ___. 9

v. The first phase of mitosis, the longest phase, is 2 condenses to form called ___. During this phase ___ 1 3 visible chromosomes, the ___ disappears and 4 the ___ separate moving to opposite ends of the cell. 5 During the second phase of mitosis, ___ , the chromosomes ___6 ___ down the center of the cell. 7 , the ___ 8 that During the third phase of mitosis, ___ 9 split and the sister chromotids join the sister ___ 10. These chromosomes then become individual ___ move to opposite sides of the cell. In the last phase 11 , the chromosomes spread out into of mitosis, ___ 12 and the nuclear membrane ___

v. Label the following stages of the cell cycle: