Meiosis and Mitosis Lab

990 WordsMar 9, 20124 Pages
AP LAB # 3: MITOSIS AND MEIOSIS Website to go for quizzes and activities: Print out the quizzes for mitosis and meiosis http://www.phschool.com/science/biology_place/labbench/ OVERVIEW Exercise 3A is a study of mitosis. You will simulate the stages of mitosis by using chromosome models.You will use prepared slides of onion root tips to study plant mitosis and to calculate the relative duration of the phases of mitosis in the meristem of root tissue. Prepared slides of the whitefish blastula will be used to study mitosis in animal cells and to compare animal mitosis and plant mitosis. Exercise 3B is a study of meiosis. You will simulate the stages of meiosis by using chromosome models. You will study the crossing over and…show more content…
Use a website to help you draw the animal cell stages. Draw (please no cut and paste work!) the different stages in a ‘T’ table (example below). PART 3: How many cells in each stage: Take one view of the Onion root tip and count how many cells you see for each stage (you have to see ALL stages – ‘0’ is not an option – switch views if you cannot find all stages). 1) Make a pie chart – and figure out if 360O of the piechart represented 24 hours – 1440 min. how long did the cell spend in each phase? (Interphase to cytokinesis). 2) Why are onion root tip and whitefish blastula areas that are ideal to view mitosis? PART 4: Meiosis bead simulation: a) As before follow instructions in the handout and draw pictures for each stage of Meiosis I an Meiosis II – color! b) Label: Homologous chromososmes, sister chromatids, nonsister chromatids, chiasmata, synapsis, tetrad, centrioles, centromere, centrosome, metaphase plate, spindle fibers, microtubules, germ cell, gamete cells c) If this process simulated oogenesis – what would the products be (hint: how many ova, how many polar bodies) and why? d) If this process was spematogenesis – how many gametes would be produced? e) What happened to the diploid condition of your parent cell – was it preserved in the daughter cell or not? How do you know? f) Compare your drawings of Mitosis and Meiosis bead simulation in a T table–

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