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WARM UP 1/25 1. What is something that you learned from the online activity yesterday? 2. Humans have a total of ____chromosomes. 3. A section of DNA is call a _________ 4. Genes have different versions called _______. 5. Draw a picture of a pair of homologous chromosomes. TODAY 1/25 1) 2) 3) 4) 5) 6) Engage activity with seat partner Learning Target #3 (last one of the week) Beginning notes on Ch 11 #2 Online assignment (partner) Revise engage activity Exit ticket ENGAGE DIRECTIONS • You are working with the person next to you at your seat. • You have a set of pictures. Work with your partner to place them in order from 1-14. (the 1st two are done for you) TIME: 4 minutes WHAT DO YOU THINK THIS PICTURE IS ABOUT? * Answer on your paper…… a. What do you think the circles in the picture represent? b. What parts do you recognize on the pictures? c. What do you think is happening in the picture? LEARNING TARGET 1/25 I can describe and identify the steps of cell division and compare mitosis and meiosis. CHAPTER 11 NOTES #2 MITOSIS and MEIOSIS DISCUSSION QUESTION Each of us began as a single cell, so one important question is: • How did that single cell develop into a body with more than a trillion cells? • Even in a fully grown adult, cells still undergo cell division. Why is this useful? Cells need to divide SOME REASONS: 1) To grow 2) To make more cells we need 3) To replace ones that die 4) To replace ones that we lose Every cell in our body has the same DNA. When cells divide, each new cell needs to have a copy of that DNA Organelle that helps the cell divide…. • CENTRIOLES 2 ways cells divide: 1) Mitosis 2) Meiosis What is the same, what is different between the two? ONLINE ASSIGNMENT to look at MITOSIS • http://www.johnkyrk.com/mitosis.html Log in and begin working. EXIT SLIP Get a new “Mitosis Sequencing Engage” sheet. Using your website animation and what you learned, put the steps to your engage activity in the right order. Label the phases you learned on the STARRED steps * -------------------------------------------------------------------------EXTRA CREDIT! If you get done early, play the animation for MEIOSIS and on a slip of paper with your name, write down 3 differences you notice between it and MITOSIS.