1. 1 1 The Cell Cycle Mitosis Bell Work 1/29/14: The DNA sequence of TACGGAC would bond with what sequence?

2. 01/25/12 Wrapping up… 1.Return papers and test. 2.Finish paper DNA.

3. 3 3 Objectives:  Can I describe the relationship among genes, chromosomes, and inherited traits? (SPI0707.4.3)  Am I able to sequence a series of diagrams that depict chromosome movement during plant cell division? (SPI0707.1.4)

4. Table of Contents Gallery Walk Gallery Walk Objectives: For this assignment you will perform a “Gallery Walk”. Each poster in the Gallery contains a question about chromosomes, DNA, and mutations. Number your paper 1-8 skipping two lines between each number. You and your group members must walk from poster to poster answering each question. All group members must answer all questions, even if you have to make an educated guess. You will write your answers to the questions on your own notebook paper. If you are confused about a topic at any station, you may use Post-It notes to write down your questions, and stick them to the posters in the Gallery. I will review these and we will discuss them tomorrow at the beginning of class. Place a sticker on one of the cards to indicate that you need help or you understand. You will have 1 minute at each poster. Use your time wisely and give 100%! You may switch when the timer sounds.

5. 50,000 of the cells in your body will die and be replaced with new cells, all while you have been reading this sentence! It takes about 8 hours for one of your cells to completely copy its DNA. One single cell contains two meters of DNA. Cell Cycle Notes

6. How do little elephants grow up to be BIG elephants?

8. The life cycle of a cell is called the cell cycle. The cell cycle begins when the cell is formed and ends when the cell divides and forms new cells.

9. Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun. Cells reproduce constantly. Three reasons why cells reproduce: 1. Growth 2. Repair 3. Replacement

10. DNA & Chromosomes  Before a cell divides, it must make a copy of its DNA, or deoxyribonucleic acid.  Review: Where is DNA found and what does it do for the cell?  DNA is the heredity material that controls the cells activities, including the making of new cells.  The DNA of a cell is organized into structures called chromosomes.

11. Chromosomes  Human body cells have 46 chromosomes, or 23 pairs of chromosomes.  These pairs are made up of similar chromosomes known as homologous chromosomes. Challenge Questions:  Why does our DNA compact into these chromosome structures?  Why do we have 23 pairs of chromosomes?

12. Mitosis Cell division occurs in a series of stages, or phases. Look @ pgs. 88-89 Interphase Prophase (Mitosis Phase 1) Metaphase (Mitosis Phase 2) Anaphase (Mitosis Phase 3) Telophase (Mitosis Phase 4) Cytokinesis

13. Mitosis Sequences With your group, sequence the phases of mitosis in order using the cards. At the bottom of your notes, draw your card sequence and justify why this order is correct.

14. http://www.cellsalive.com/mitosis.htm

15. 01/25/12 3-2-1 Reflection 3 things you have learned about DNA and cell division. 2 questions you have about this topic. 1 way you can relate this to the real- world.