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Jig Saw Types of Reproduction Group Activity
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As a group you are going to become an expert on a specific type of reproduction and report this information to the class.Directions 1.Research and complete your portion of the chart on your assigned type of reproduction; use the computer/phone to find two examples of organisms that reproduce that way. 2.You will present to the class and provide a visual (8x14 paper) to be shown with the Elmo. 3.On a separate sheet of paper answer the following questions. When researching organisms you must include the following information: 1. Describe the type of reproduction you researched. 2. Name of the organisms you found. 3. What type of ecosystem do these organisms live in 4. What type of consumers are these organism : herbivore, carnivore or omnivore or none of the above 5. How does this organism reproduce? Sexually or Asexually? 6. Are there parents involved in raising the offspring? 7. Is this organism complex or simple? Complex like a human or simple like a bacteria? 8. Genetic variation? Are the offspring identical clones or do they have a variation of the parents genes ?
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Your poster must include: Title – your assigned type of reproduction Type (asexual or sexual),organisms that use this type, Positives, Negatives, description, Picture and name of organisms Answers to questions 1-8
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BB: Asexual vs. Sexual Reproduction Name Type ( asexual or sexual) What happens ? Organisms that use this type + Positives - Negatives 1. Binary Fission 2. Bacterial Conjugation 3. Fragmentation 4. Budding 5. Pollination 6. Sexual Reproduction 7. Vegetative propagation Table 7 Table 6 Table 5 Table 4 Table 3 Table 8 Table 1 & 2
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BB: Asexual vs. Sexual Reproduction Name Type ( asexual or sexual) What happens ? Organisms that use this type + Positives - Negatives 1. Binary Fission 2. Bacterial Conjugation 3. Fragmentation 4. Budding 5. Pollination 6. Sexual Reproduction 7. Vegetative propagation
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Asexual vs. Sexual Reproduction
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Asexual reproduction A form of reproduction which does not involve meiosis or fertilization. Asexual reproduction = one parent. The primary form of reproduction for single- celled organisms such as archaea, bacteria, and protists. Many plants and fungi reproduce mostly asexually as well.
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Sexual Reproduction Results in increasing genetic diversity of the offspring. Characterized by two processes: meiosis, halving of the number of chromosomes fertilization, combination of two gametes and the restoration of the original number of chromosomes During meiosis, chromosomes usually cross over = genetic recombination. Primary method of reproduction for the vast majority of visible organisms, including almost all animals and plants.
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Binary Fission Asexual Cell splits and replicated DNA goes with each part Prokaryotes, Bacteria + Fast and easy - Everybody has the same DNA
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Bacterial Conjugation Asexual, “Sexual” A bacteria shoots out a tube and sends a piece of its DNA to another bacteria Bacteria + Mixes DNA - “Parent” loses a little piece of DNA
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Fragmentation/ regeneration Asexual Body of parent breaks and produces offspring Fungi, moss, sea stars, planarian + Easy - Parent broken, same DNA
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Fragmentation/ regeneration Moss
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Budding Asexual Offspring grows out of parent Yeast, hydras + Fast, somewhat easy - Same DNA
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Pollination Sexual Pollen is delivered to female part of plant Flowering plants + Plants don’t have to move, mixes DNA - Need external source for pollination to take place; wind, bee, bat, butterfly etc.
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Pollination
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Sexual Reproduction Sexual DNA from 2 individuals merge to form one Animals, Plants + Diverse DNA - Takes a long time, 2 individuals needed
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Sexual Reproduction
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Numbers! (20 minutes or 1 year, 8 months) CoreBacteria (Binary Fission) Hydra (Budding) Planaria, Starfish (Fragmentation) Rabbits, Kittens, Humans (Sexual Reproduction) Dandelions, Pine trees (Pollination) 112,731 (6) 504 (6)2640 (5)20,10,2 (2)46, 3 (3) 223,313 (7) 610 (4)3626 (6)20,10,2 (4)20, 2 (4) 320,697 (10) 450 (6)2578 (8)20, 10, 2 (3)21, 1.5 (4) 422,994 (10) 613 (6)2982 (5)20, 10, 1.5 (4)20, 1.5 (4)
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