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Dragon Meiosis Webquest Name: Site 1-- Inheritance of Dragons http://www2.edc.org/weblabs/weblabdirectory1.html click on “Dragons,” click on “Enter Web Lab.” Once in the lab, follow the directions for moving through Dragons. “Welcome to Inheritance in Dragons” 1. Why do you think offspring have the same traits as their parents? 2. How many chromosomes do dragons have? _______ Two ___________________ chromosomes and one pair of _________ chromosomes. 3. How is sex determined in dragons? 4. 5. 6. 7. 8. What are the female sex chromosomes in dragons? _____________ What are the male sex chromosomes in dragons? _____________ On the chromosomes shown, what do genes code for? Each gene has multiple __________________ that can change the way a dragon looks. Click on each of the male chromosomes. What does each of the letters code for? a. H __________ b. W __________ c. L __________ d. A __________ e. C __________ f. F __________ 9. Which of the following alleles is found on the red sex chromosome? When finished exploring the male chromosomes, highlight the female dragon. 10. What do you notice that is different about the female dragon’s chromosomes? When you are finished exploring the female chromosomes, click the “next” button. 11. The change you made on the chromosome was that the dragons phenotype or genotype? 12. When you change the genotype what happened to the dragon? 13. Define phenotype. Begin testing your knowledge on genotype and phenotype for the different dragons. 14. Which alleles result in “horns?” __________________________ 15. Which alleles result in “two legs?” ________________________ 16. How many different phenotypes are there for legs in dragons? _____________________ 17. What genetic combination would result in a “green” dragon? ____________________ 18. How many body colors are possible in dragons? _______________ 19. If a male dragon did not have fire, what genetic combinations could he have?_________ 20. If a female dragon had the “f” allele on the “X” chromosome, would she have fire or not?______________________________ Now test your knowledge of inheritance. Try to make as few mistakes as possible. You must test this until you have “zero” mistakes. Once you have zero mistakes, please have Mr. W sign your paper. Mr. W’s signature: ________________ Site 2—Dragons meiosis http://www2.edc.org/weblabs/weblabdirectory1.html click on “Dragons meiosis,” click on “Enter Web Lab.” Once in the lab, follow the directions for moving through Dragons. 1. What are the 5 distinct traits of these two dragons? ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 2. What alleles does a dragon have if it has HORNS, WINGS, LEGS, BODY COLOR and FIRE genes? (Hint: find the dragon with these traits and roll over the cells to see what letters they have). ________________________________________________________________________ ________________________________________________________________________ Review the process of meiosis Play the meiosis animations for BOTH the male and female dragons. Once finished answer question #3-5. 3. What are the alleles for the chromosomes in ONE of the female dragon cells? ________________________________________________________________________ ______ 4. What are the alleles for the chromosomes in ONE of the male dragon cells? ________________________________________________________________________ ______ 5. How many cells are produced during meiosis? ___________ 6. What types of cells undergo meiosis? __________________ cells. 7. Are these cells produced, haploid or diploid? __________________ Cross a cell from the male and female parent dragon. 8. Once finished compare the offspring to its parents. What traits does the baby dragon have in common with each parent? Find at least 2 similarities for each. Fill out the chart below. Trait 1 in common with Trait 2 in common with baby dragon baby dragon Male parent Female parent 9. Click “play to run meiosis for each of the parent cells. Once finished with meiosis, choose one gamete from the male and one from the female run fertilization of the two cells. Fill out the chart for EACH of the four offspring you make. Traits Horns Wings Legs Example 1 Offspring 1 Offspring 2 Offspring 3 Offspring 4 No Yes 2 Body color Red Fire Male/Female no Male 10. When you are finished you can click “END” and continue on with the next website. Site 2 – Lew-Port’s Meiosis Page Go to Lew-Port’s Biology Place and read the text. Then click on the arrow to learn about meiosis. 1. How many chromosomes does the cell in this animation start with? __________________ 2. The homologous pairs are represented by similar ________________________ 3. Copies of chromosomes are held together by the _____________________________ 4. Each chromosome finds its __________________________________________ 5. Draw “crossing over” – using your pencil to shade in the areas that exchange parts. 6. How many chromosomes are at each pole of the cell? ___________ 7. During meiosis 2, chromosomes line up again along the cell’s __________________________ 8. Only _________ copy of each chromosome moves toward the poles. Which means only _________ chromosomes of the original six. 9. New membranes form around each ____________________________ 10. Each cell divides, forming a total of ______________ cells. Site 3 – Biology in Motion - Meiosis Go to http://www.biologyinmotion.com/cell_division/index.html Click on “Practice Meiosis” 11. There are two ways in which the chromosomes can end up after meiosis. Sketch the two ways and indicate by color the chromosomes (use the following color codes: Purple, Dark Purple, Green,Dark green) Possibility 1 Possibility 2 Site 4: PBS: Mitosis vs. Meiosis http://www.pbs.org/wgbh/nova/baby/ Introduction and then Click on “Mitosis vs. Meiosis” Name of Phase Description 1. Click on “How Cells Divide” Read the 5. Homologous chromosomes pair up and form tetrad Spindle fibers move homologous chromosomes to opposite sides Nuclear membrane reforms, cytoplasm divides, 4 daughter cells formed Chromosomes line up along equator, not in homologous pairs Crossing-over occurs 6. Chromatids separate 7. Homologs line up alone equator 8. Cytoplasm divides, 2 daughter cells are formed 2. 3. 4.