Meiosis Internet Lab (DOC)

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					Meiosis Internet Lab                             Name__________________________________Date___________Pd__
   I.   Go to: http://www.sumanasinc.com/webcontent/animations/content/meiosis.html
                Read the introduction and fill in blanks below.

 1.     A eukaryotic cell can perfom ___________________reproduction, ________________reproduction or both.

 2.     What happens in asexual reproduction?

 3.     What is meiosis?________________________________.

 4.     In meiosis the parent cell divides into _____ cells, each with ___________ the genetic material of the parent.

 5.     A __________________ parent cell divides to make __________________ cells.

 6.     A haploid gamete from each parent combine to produce a diploid________________.

        Watch the animation and see the stages of meiosis.

 7.     Read the conclusion. What is crossing over?_______________________________________________

 8.     Go back to animation and find the stage where crossing over is first observed. What stage is this?______________

   II. Go to: http://www.pbs.org/wgbh/nova/baby/divi_flash.html
               ******IMPORTANT: YOU WILL NEED TO FOCUS ON THE MEIOSIS SIDE!******
 9.     How many chromosomes do humans have in each cell? ______
 10.    How many are in an egg? ________________ Sperm? _______________
 11.    What problem would happen if they didn’t have that number in the gametes?


 12.    What happens during Meiosis Prophase I that is different from Mitosis Prophase?


 13.    Where are the chromosomes lined up in Metaphase I: are they side by side in pairs, or in a single row?

 14.    What happens in Anaphase I? ___________________________________________________________
 15.    Do sister chromatids separate in Anaphase I? _______
 16.    What is the last phase of Meiosis I?___________________
 17.    In the next 4 stages briefly describe what is happening in each phase:
          Prophase II=

          Metaphase II=

          Anaphase II=

          Telophase II=

 18.    At the end of Telophase II how many cells are there? _____________
 19.    At the end of Cytokinesis, how many chromosomes are there in each cell compared to the original cell? _____________


   *WHEN YOU ARE DONE, PLEASE LOG-IN and CHECK YOUR GRADES/MISSING WORK

				
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