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3/3/15 Materials Needed: Binder, Pencil LS-9 Homework: #70 DO NOW: We know from learning about Kingdoms that some organisms use asexual reproduction. But what is it? Agenda: 1. Do Now (5) 2. Experiment (10) 1. Send your 3. Dismiss (3) materials manager up with the homework. 2. Write down the Objectives homework • Scientists willinbe your able to agenda. describe the rules and 3.basic Do the DO NOW. procedures of 6th 4.grade If you finish science. early, thumbs up. Today’s Agenda • • • • • • Objectives Mitosis and Meiosis Chromebook Simulation Project work Homework: #70 BYL Objectives Scientists will be able to synthesize information to create a presentation and evaluate each other’s work. Writing and Speaking: Students will put together group presentations using a variety of resources and materials. What are we doing? We are learning about how cells and organisms reproduce. Why are we doing it? In order to understand diversity, we must first master reproduction. How do I know you’ve got it? When you understand the benefits and problems with sexual and asexual production, you’ve got it. Asexual Reproduction: Mitosis • Cell division and reproduction can occur in two ways - mitosis and meiosis. • Mitosis is a process of cell duplication, or reproduction, during which one cell gives rise to two genetically identical daughter cells. • Mitosis is used by single celled organisms to reproduce; it is also used for the organic growth of body cells, tissues, and fibers. • Mitosis creates cells identical the original cell. Sexual Reproduction: Meiosis • Meiosis is a division of a cell involving two divisions of the chromosomes and giving rise to four gametes, or sex cells, each possessing half the number of chromosomes of the original cell. Meiosis is useful for sexual reproduction of organisms. The male and female sex cells, e.g. the sperm and egg, fuse to create a new, singular biological organism (Zygote). • Meiosis creates cells with different combinations of DNA from the original cell. This leads to genetic variability. Vocabulary: Don’t get confused! • Gamete: sex cell, one for female, one for male • Zygote: the cell that results from fertilization of two gametes (sex cells) that has 2 copies of chromosomes (one from each sex cell). • Fertilization: Male gamete and Female gamete fuse to create a zygote Mitosis and Meiosis! • First, read the text with your group. Then, use the chromebooks to log in to your discovery ed accounts and view the assignment called “You say mitosis, and I say meiosis” and do the simulation. Answer the questions that go along with it. Then, move on to the next activity. • How to get the A+: The expectations are on your worksheet. Volume level 1! Cell Division Project Presentations • For a grade of A+, you must include: – Correct information about mitosis and meiosis – Creative presentation of information – All group members must participate. Any group members not participating will lower your score. – Present your posters to the class using scientific vocabulary – The rubric is on the last page of your work. HW: #70 Directions: Answer the multiple choice question below and then explain why you chose it and what evidence you used to get to that answer. You also need to provide your reasoning. You must use complete sentences. Use transition words to start out your reasoning (As a result, in conclusion, therefore). **You must also annotate the question: underline what is important, circle what you do not know, and re-write the question into your own words: Let’s prove what we’ve learned! BYL • What is the primary advantage of sexual reproduction when compared to asexual reproduction? Explain your answer with a complete sentence!! Stack, pack, and leave no tracks. Scientist of the Day